FR673181A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Safety key and crank for winding all kinds of spring mechanisms for devices, clocks, watches, etc.
Assignee: Wilhelm Conraed Houck
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Filing: 1929-03-07
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Granted: 1930-01-11
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Expires: 1949-03-07
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Conraed Houck
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-31 14:22
CPC Classifications
G; G04; G04B; G04B3/00; G04B3/06; G04B3/04
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