Chemistry: electrical and wave energy – Processes and products
Patent
1982-03-16
1983-09-13
Tufariello, T. M.
Chemistry: electrical and wave energy
Processes and products
C25D 100, C25D 120
Patent
active
044040679
ABSTRACT:
A method of manufacturing components of a timepiece dial, such as timekeeping hands and dial plates, whereby these components can be made extremely thin, while warping is held to a very low level even if the component is subjected to machining operations. The method is based upon utilizing a plurality of electroformed metal layers having different types of internal stress, i.e. compressive or tensile, developed within
REFERENCES:
patent: 3713997 (1973-01-01), Anselrode
patent: 3853714 (1974-12-01), Shimada
patent: 4327428 (1982-04-01), Enomoto
Citizen Watch Company Limited
Tufariello T. M.
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