Patent US2631082A successfully refreshed from Google Patents.
US2827554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operating table lamp
Assignee: Individual
•
Filing: 1954-10-12
•
Granted: 1958-03-18
•
Expires: 1974-10-12
Abstract
No abstract record available.
Inventors
- 👤 Gunther Franz
- 👤 Seitz Ernst Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:25
CPC Classifications
F; F21; F21V; F21V9/00; F21V9/04; F21V7/00; F21V7/22; F21W; F21W2131/00; F21W2131/20; F21W2131/205
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |