DE650907C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Optical system
Assignee: HUGH IWAN GRAMATZKI
•
Filing: 1934-08-28
•
Granted: 1937-10-05
•
Expires: 1954-08-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-28 04:02
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/14; G02B15/143; G02B15/1435; G02B15/143503
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.