US2972044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminous ceiling structure
Assignee: LUMINOUS CEILINGS Inc
•
Filing: 1955-08-08
•
Granted: 1961-02-14
•
Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 Smith Gean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:45
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/32; F; F21; F21V; F21V17/00; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734126A
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US2752017A
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US1937843A
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US1997581A
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US2078969A
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US2090239A
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US2577671A
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US2659807A
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US2674686A
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US2730211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-14 | 1964-08-15 | 1965-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-14 | 1968-08-15 | 1969-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-14 | 1972-08-15 | 1973-02-14 | $7700.00 | Window Closed / Lapsed |