Flat type multi-digit indicating apparatus

Details Flat type multi-digit indicating apparatus Flat type multi-digit indicating apparatus

1976-05-06

1978-07-25

Demeo, Palmer C.

Electric lamp and discharge devices

With character display

313220, 313317, 313497, H01J 502, H01J 520, H01J 6302

Patent

active

041032063

ABSTRACT:
An envelope for hermetically containing various functional elements of an indicator tube is disclosed. The envelope includes a base plate and a transparent cover mounted on a front surface of the base plate to form a chamber with the base plate which contains a plurality of the indicator elements. The cover comprises a channel plate having a transparent upper viewing window and side ridges or walls and a pair of strips to be bonded to the open side ends of the channel plate.

REFERENCES:
patent: 2967965 (1961-01-01), Schwartz
patent: 3177345 (1965-04-01), Plumat
patent: 3327153 (1967-06-01), Bickmire et al.
patent: 3327154 (1967-06-01), Bowerman
patent: 3408523 (1968-10-01), Demarest et al.
patent: 3743880 (1973-07-01), Demarest
patent: 3800178 (1974-03-01), Farina

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