Patent US3157545A successfully refreshed from Google Patents.
Patent US3479789A successfully refreshed from Google Patents.
Patent US2671403A successfully refreshed from Google Patents.
Patent US2908811A successfully refreshed from Google Patents.
US2908811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Service lamp
Assignee: Individual
•
Filing: 1957-06-12
•
Granted: 1959-10-13
•
Expires: 1977-06-12
Abstract
No abstract record available.
Inventors
- 👤 James J Duddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:57
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/14; F21V21/26
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) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |