Patent DE905448C successfully refreshed from Google Patents.
DE905448C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Arrangement for illuminating flat surfaces, especially scales u. like
Assignee: Individual
•
Filing: 1951-12-21
•
Granted: 1954-03-01
•
Expires: 1971-12-21
Abstract
No abstract record available.
Inventors
- 👤 Hans Eckstein
- 👤 Helmut Seike
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-26 11:00
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0013; G02B6/0015; G02B6/002; G02B6/0021; G02B6/0033; G02B6/0035; G02B6/0045; G02B6/0046; G02B6/0081; G09; G09F; G09F13/00; G09F13/18; G09F2013/1804; G09F2013/1827
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.