by the hand(s) or handlike members closing the contacts

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Industry

CPC
G04C21/323

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Parent Industries

GPHYSICS G04Horology G04CELECTROMECHANICAL CLOCKS OR WATCHES G04C21/00Producing acoustic time signals by electrical means

Current Industry

G04C21/323by the hand(s) or handlike members closing the contacts

Industries

Patents Grantslast 30 patents

Information Patent Grant
2085617
- Patent number 2,085,617
- Issue date Jun 29, 1937
- G04 - HOROLOGY
Information Patent Grant
2062715
- Patent number 2,062,715
- Issue date Dec 1, 1936
- G04 - HOROLOGY
Information Patent Grant
1370059
- Patent number 1,370,059
- Issue date Mar 1, 1921
- G04 - HOROLOGY