FR700968A - Warning device - Google Patents
Warning deviceInfo
- Publication number
- FR700968A FR700968A FR700968DA FR700968A FR 700968 A FR700968 A FR 700968A FR 700968D A FR700968D A FR 700968DA FR 700968 A FR700968 A FR 700968A
- Authority
- FR
- France
- Prior art keywords
- warning device
- warning
- 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
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/06—Audible signalling systems; Audible personal calling systems using hydraulic transmission; using pneumatic transmission
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR700968T | 1930-08-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR700968A true FR700968A (en) | 1931-03-10 |
Family
ID=9052454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR700968D Expired FR700968A (en) | 1930-08-22 | 1930-08-22 | Warning device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR700968A (en) |
-
1930
- 1930-08-22 FR FR700968D patent/FR700968A/en not_active Expired
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