BE808777A - FLAG - Google Patents
FLAGInfo
- Publication number
- BE808777A BE808777A BE138994A BE138994A BE808777A BE 808777 A BE808777 A BE 808777A BE 138994 A BE138994 A BE 138994A BE 138994 A BE138994 A BE 138994A BE 808777 A BE808777 A BE 808777A
- Authority
- BE
- Belgium
- Prior art keywords
- flag
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1840472 | 1972-12-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE808777A true BE808777A (en) | 1974-04-16 |
Family
ID=4432765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE138994A BE808777A (en) | 1972-12-18 | 1973-12-18 | FLAG |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE808777A (en) |
CH (1) | CH545523A (en) |
FR (1) | FR2211161A5 (en) |
IT (1) | IT1000328B (en) |
-
1972
- 1972-12-18 CH CH545523D patent/CH545523A/xx not_active IP Right Cessation
-
1973
- 1973-12-14 IT IT5430673A patent/IT1000328B/en active
- 1973-12-14 FR FR7344754A patent/FR2211161A5/en not_active Expired
- 1973-12-18 BE BE138994A patent/BE808777A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH545523A (en) | 1974-01-31 |
FR2211161A5 (en) | 1974-07-12 |
IT1000328B (en) | 1976-03-30 |
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