Patent DE2158563B2 successfully refreshed from Google Patents.
DE2158563B2
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Electro-optical device controllable by an electric field for modulating the intensity of a light beam
Assignee: BBC Brown Boveri AG Switzerland
•
Filing: 1971-11-25
•
Granted: —
•
Expires: 1991-11-25
Abstract
No abstract record available.
Inventors
- 👤 Schadt M
- 👤 Helfrich W
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-03 22:32
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/137; G02F1/139; G02F1/1396
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.