Patent US2563635A successfully refreshed from Google Patents.
US2563635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture for elongated tubular lamps
Assignee: Individual
•
Filing: 1947-07-18
•
Granted: 1951-08-07
•
Expires: 1967-07-18
Abstract
No abstract record available.
Inventors
- 👤 Morris W Askin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:18
CPC Classifications
F; F21; F21V; F21V17/00; F21S; F21S8/00; F21S8/04; H; H01; H01R; H01R33/00; H01R33/05; H01R33/06; H01R33/08; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US517889A
Cited
US1997687A
Cited
US2169347A
Cited
US2338077A
Cited
US2331811A
Cited
US2315884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |