FR619046A - Selective remote sound signaling system - Google Patents
Selective remote sound signaling systemInfo
- Publication number
- FR619046A FR619046A FR619046DA FR619046A FR 619046 A FR619046 A FR 619046A FR 619046D A FR619046D A FR 619046DA FR 619046 A FR619046 A FR 619046A
- Authority
- FR
- France
- Prior art keywords
- signaling system
- remote sound
- sound signaling
- selective remote
- selective
- 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
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR619046T | 1926-07-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR619046A true FR619046A (en) | 1927-03-25 |
Family
ID=8983390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR619046D Expired FR619046A (en) | 1926-07-17 | 1926-07-17 | Selective remote sound signaling system |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR619046A (en) |
-
1926
- 1926-07-17 FR FR619046D patent/FR619046A/en not_active Expired
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