Horology: time measuring systems or devices – Cases – Wrist worn
Patent
1978-10-12
1980-09-23
Truhe, J. V.
Horology: time measuring systems or devices
Cases
Wrist worn
403297, 403295, 368286, 368276, G04B 3704, F16B 720, F16B 1300
Patent
active
042235278
ABSTRACT:
A retaining spring for fixedly retaining a case band and a back cover of a wristwatch case, which retaining spring comprises a fixing portion secured to one of the case band and the back cover, a weakened or torsionable portion extending from the fixing portion, and an engaging portion connected to the fixing portion through the weakened or torsionable portion and engaging with the other one of said case band and said back cover.
REFERENCES:
patent: 2845773 (1958-08-01), Sakalys
Tutiya Hidetaka
Waki Masahiko
Citizen Watch Co. Ltd.
Conklin John B.
Truhe J. V.
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