GB2349035B - Hands-free megaphone - Google Patents
Hands-free megaphoneInfo
- Publication number
- GB2349035B GB2349035B GB0006887A GB0006887A GB2349035B GB 2349035 B GB2349035 B GB 2349035B GB 0006887 A GB0006887 A GB 0006887A GB 0006887 A GB0006887 A GB 0006887A GB 2349035 B GB2349035 B GB 2349035B
- Authority
- GB
- United Kingdom
- Prior art keywords
- megaphone
- hands
- free
- free megaphone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9908380.0A GB9908380D0 (en) | 1999-04-14 | 1999-04-14 | Rob Carpenter's voice thrower |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0006887D0 GB0006887D0 (en) | 2000-05-10 |
GB2349035A GB2349035A (en) | 2000-10-18 |
GB2349035B true GB2349035B (en) | 2003-12-10 |
Family
ID=10851418
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB9908380.0A Ceased GB9908380D0 (en) | 1999-04-14 | 1999-04-14 | Rob Carpenter's voice thrower |
GB0006887A Expired - Fee Related GB2349035B (en) | 1999-04-14 | 2000-03-23 | Hands-free megaphone |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB9908380.0A Ceased GB9908380D0 (en) | 1999-04-14 | 1999-04-14 | Rob Carpenter's voice thrower |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB9908380D0 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6940984B2 (en) * | 2001-05-22 | 2005-09-06 | Robert Leonard Carpenter | Hands-free megaphone |
AU770159B2 (en) * | 2001-10-23 | 2004-02-12 | Robert Leonard Carpenter | Hands-free megaphone |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4237341A (en) * | 1978-09-25 | 1980-12-02 | Richards Paul E | Portable self-contained amplifier and loudspeaker apparatus |
GB2081550A (en) * | 1980-07-16 | 1982-02-17 | Gentex Corp | Microphone arrangement for face masks |
JPS59140800A (en) * | 1983-01-31 | 1984-08-13 | Hiroyuki Ito | Portable loudspeaker |
FR2543392A1 (en) * | 1983-03-15 | 1984-09-28 | Pain Genevieve | On-belt amplifier |
US5463693A (en) * | 1993-11-10 | 1995-10-31 | Audiopack Sound Systems Inc. | Voice amplification adapter assembly for face mask |
JPH08237799A (en) * | 1995-02-28 | 1996-09-13 | O G Syst:Kk | Portable loudspeaker |
US6015160A (en) * | 1997-05-02 | 2000-01-18 | Spector; Donald | Combined safety helmet and PA system |
-
1999
- 1999-04-14 GB GBGB9908380.0A patent/GB9908380D0/en not_active Ceased
-
2000
- 2000-03-23 GB GB0006887A patent/GB2349035B/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4237341A (en) * | 1978-09-25 | 1980-12-02 | Richards Paul E | Portable self-contained amplifier and loudspeaker apparatus |
GB2081550A (en) * | 1980-07-16 | 1982-02-17 | Gentex Corp | Microphone arrangement for face masks |
JPS59140800A (en) * | 1983-01-31 | 1984-08-13 | Hiroyuki Ito | Portable loudspeaker |
FR2543392A1 (en) * | 1983-03-15 | 1984-09-28 | Pain Genevieve | On-belt amplifier |
US5463693A (en) * | 1993-11-10 | 1995-10-31 | Audiopack Sound Systems Inc. | Voice amplification adapter assembly for face mask |
JPH08237799A (en) * | 1995-02-28 | 1996-09-13 | O G Syst:Kk | Portable loudspeaker |
US6015160A (en) * | 1997-05-02 | 2000-01-18 | Spector; Donald | Combined safety helmet and PA system |
Also Published As
Publication number | Publication date |
---|---|
GB9908380D0 (en) | 1999-06-09 |
GB2349035A (en) | 2000-10-18 |
GB0006887D0 (en) | 2000-05-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20130323 |