FR421467A - Wake-up system - Google Patents
Wake-up systemInfo
- Publication number
- FR421467A FR421467A FR421467DA FR421467A FR 421467 A FR421467 A FR 421467A FR 421467D A FR421467D A FR 421467DA FR 421467 A FR421467 A FR 421467A
- Authority
- FR
- France
- Prior art keywords
- wake
- 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
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C21/00—Producing acoustic time signals by electrical means
- G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
- G04C21/20—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm
- G04C21/205—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm by the hand(s) or handlike members closing the contact
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR421467T | 1910-10-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR421467A true FR421467A (en) | 1911-02-23 |
Family
ID=1464514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR421467D Expired FR421467A (en) | 1910-10-14 | 1910-10-14 | Wake-up system |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR421467A (en) |
-
1910
- 1910-10-14 FR FR421467D patent/FR421467A/en not_active Expired
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