US2567779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture for elongated tubular lamps
Assignee: Individual
•
Filing: 1948-06-17
•
Granted: 1951-09-11
•
Expires: 1968-06-17
Abstract
No abstract record available.
Inventors
- 👤 Bernard A Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:44
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/20; F21V21/00; F21V21/02; F21V11/00; F21V11/06; F21Y; F21Y2103/00; F21Y2113/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1618196A
Cited
US2139005A
Cited
US2385040A
Cited
US2291491A
Cited
US2327552A
Cited
US2369228A
Cited
US2474308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |