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

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CPC
G04C21/305

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Parent Industries

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

Current Industry

G04C21/305by the hand(s) or handlike members closing the contacts

Industries

Patents Grantslast 30 patents

Information Patent Grant
2029667
- Patent number 2,029,667
- Issue date Feb 4, 1936
- G04 - HOROLOGY
Information Patent Grant
338935
- Patent number 338,935
- Issue date Mar 30, 1886
- G04 - HOROLOGY