EP 0078237 B1 19870107 - WATCH WITH AN ANALOGUE DISPLAY DEVICE, OF WHICH THE DIAL IS FORMED OF A LIQUID CRYSTAL DISPLAY CELL
Title (en)
WATCH WITH AN ANALOGUE DISPLAY DEVICE, OF WHICH THE DIAL IS FORMED OF A LIQUID CRYSTAL DISPLAY CELL
Publication
Application
Priority
CH 687681 A 19811028
Abstract (en)
[origin: US4488818A] A watch display comprises time display hands (3, 4) and a reflecting digital display (5) which acts as dial for the hands, the display being transparent under the effect of an electric field and opaque in the absence of the field.
IPC 1-7
IPC 8 full level
G04C 3/00 (2006.01); G04C 3/14 (2006.01); G04G 9/00 (2006.01)
CPC (source: EP US)
G04G 9/0094 (2013.01 - EP US)
Citation (examination)
- US 3551026 A 19701229 - HEILMEIER GEORGE H
- US 3833287 A 19740903 - TAYLOR G, et al
- US 3731986 A 19730508 - FERGASON J
- JP S5399979 A 19780831 - CITIZEN WATCH CO LTD
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0078237 A1 19830504; EP 0078237 B1 19870107; CH 642227 B; CH 642227G A3 19840413; DE 3275029 D1 19870212; HK 12592 A 19920221; JP H0210397 B2 19900307; JP S5886478 A 19830524; US 4488818 A 19841218
DOCDB simple family (application)
EP 82810433 A 19821019; CH 687681 A 19811028; DE 3275029 T 19821019; HK 12592 A 19920213; JP 18830482 A 19821028; US 42638482 A 19820929