US2536533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Directional-beam lighting unit
Assignee: Individual
•
Filing: 1946-05-13
•
Granted: 1951-01-02
•
Expires: 1966-05-13
Abstract
No abstract record available.
Inventors
- 👤 Citizens National Trust S Bank
- 👤 Robert J Cannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:19
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/08; F21S8/085; F21S8/088; F21W; F21W2111/00; F21W2111/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1415685A
Cited
US1459440A
Cited
US1978236A
Cited
US2352459A
Cited
US2375311A
Cited
US2433982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |