US2897348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixtures
Assignee: GUARDIAN LIGHT Co
•
Filing: 1956-02-20
•
Granted: 1959-07-28
•
Expires: 1976-02-20
Abstract
No abstract record available.
Inventors
- 👤 William S Akely
- 👤 Karlen Robert Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:12
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/107; F21S; F21S4/00; F21S4/20; F21V19/00; F21V19/04; F21V21/00; F21V21/02; F21W; F21W2131/00; F21W2131/10; F21W2131/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1843844A
Cited
US2272176A
Cited
US2327552A
Cited
US2606998A
Cited
US2625646A
Cited
FR1040525A
Cited
US2684498A
Cited
US2712594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |