US2894693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp
Assignee: NATURAL LIGHTING Corp
•
Filing: 1957-09-24
•
Granted: 1959-07-14
•
Expires: 1977-09-24
Abstract
No abstract record available.
Inventors
- 👤 David V Howarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:15
CPC Classifications
F; F21; F21V; F21V15/00; F21V15/01; F21V19/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1048983A
Cited
US1821763A
Cited
US1880399A
Cited
US2217790A
Cited
US2347055A
Cited
US2491170A
Cited
US2530360A
Cited
US2785291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-13 | 1963-01-12 | 1963-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-13 | 1967-01-12 | 1967-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-13 | 1971-01-12 | 1971-07-14 | $7700.00 | Window Closed / Lapsed |