Patent DE623235C successfully refreshed from Google Patents.
DE623235C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Resistance body with negative temperature coefficient of electrical resistance
Assignee: Osram GmbH
•
Filing: 1933-12-20
•
Granted: 1935-12-17
•
Expires: 1953-12-20
Abstract
No abstract record available.
Inventors
- 👤 Harry Berg
- 👤 Dr Wilfried Meyer
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-31 15:38
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/04; H01C7/042; H01C7/043
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.