US2932728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent lighting fixture system
Assignee: Smoot Holman Co
•
Filing: 1956-05-28
•
Granted: 1960-04-12
•
Expires: 1976-05-28
Abstract
No abstract record available.
Inventors
- 👤 Gale F Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:56
CPC Classifications
F; F21; F21S; F21S2/00; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB571042A
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US2564373A
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US2543713A
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US2597875A
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US2621285A
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US2625646A
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US2645708A
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US2753440A
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US2759093A
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US2807709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |