US2998511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling lighting fixture
Assignee: Lightolier Inc
•
Filing: 1958-10-31
•
Granted: 1961-08-29
•
Expires: 1978-10-31
Abstract
No abstract record available.
Inventors
- 👤 Chan Kingsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:24
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/02; F21S8/026; F21V; F21V21/00; F21V21/02; F21V21/04; F21V5/00; F21V5/04; F21V5/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2140441A
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US2128322A
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US2554258A
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US2640148A
Cited
US2602881A
Cited
US2723044A
Cited
US2873358A
Cited
US2812149A
Cited
US2914658A
Cited
US2835791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |