AT169309B - Preregistration clock - Google Patents
Preregistration clockInfo
- Publication number
- AT169309B AT169309B AT169309DA AT169309B AT 169309 B AT169309 B AT 169309B AT 169309D A AT169309D A AT 169309DA AT 169309 B AT169309 B AT 169309B
- Authority
- AT
- Austria
- Prior art keywords
- preregistration
- clock
- preregistration clock
- Prior art date
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
- G04C21/30—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT169309T | 1950-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT169309B true AT169309B (en) | 1951-11-10 |
Family
ID=3655065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT169309D AT169309B (en) | 1950-07-03 | 1950-07-03 | Preregistration clock |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT169309B (en) |
-
1950
- 1950-07-03 AT AT169309D patent/AT169309B/en active
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