Patent DE635443C successfully refreshed from Google Patents.
DE635443C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Flash lamp
Assignee: ULRICH W DOERING
•
Filing: 1933-04-16
•
Granted: 1936-09-17
•
Expires: 1953-04-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-26 13:11
CPC Classifications
F; F21; F21K; F21K5/00; F21K5/02; F21K5/023; F21K5/026
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.