Inventor
PERROT FRIEDRICH
14 patents
Patents
14 patentsUS5699324ADec 16, 1997
Device for securing a watch dial
EBAUCHESFABRIK ETA AG21 citations92
US5206554AApr 27, 1993
Electromagnetic micromotor for use in watch movements of small dimensions
EBAUCHESFABRIK ETA AG26 citations92
US4362396ADec 7, 1982
Battery holder for electronic wrist watch
EBAUCHESFABRIK ETA AG21 citations81
US4057885ANov 15, 1977
Method of producing an oscillating weight for automatic timepieces
EBAUCHESFABRIK ETA AG21 citations81
US4213295AJul 22, 1980
Arrangement for securing a dial to a plate in a timepiece
EBAUCHESFABRIK ETA AG15 citations73
US4077201AMar 7, 1978
Extractable barrel-arbor
EBAUCHESFABRIK ETA AG13 citations73
US4023348AMay 17, 1977
Positioning arrangement on a frame member and on a part having to be secured thereto
EBAUCHESFABRIK ETA AG20 citations73
US3956881AMay 18, 1976
Hairspring and collet assembly for timepieces
EBAUCHESFABRIK ETA AG9 citations70
US6092923AJul 25, 2000
Timepiece including fixation device for an element added to a frame
EBAUCHESFABRIK ETA AG4 citations62
US5430694AJul 4, 1995
Timepiece
EBAUCHESFABRIK ETA AG6 citations62
US5010532AApr 23, 1991
Electronic watch having an opening for receiving a battery and a cover closing this opening, and method of mass-producing this watch
EBAUCHESFABRIK ETA AG6 citations62
US4157008AJun 5, 1979
Mechanical watch movement
EBAUCHESFABRIK ETA AG4 citations62
US5408151AApr 18, 1995
Electromagnetic motor, in particular of the stepping type, including a case engaged within a stator
EBAUCHESFABRIK ETA AG4 citations57
US4026104AMay 31, 1977
Watch movement frame
EBAUCHESFABRIK ETA AG0 citations41