Patent US2913571A successfully refreshed from Google Patents.
US2913571A
Expired / Lapsed
US
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Luminous ceiling
Assignee: Motors Liquidation Co
•
Filing: 1954-01-04
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Granted: 1959-11-17
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Expires: 1974-01-04
Abstract
No abstract record available.
Inventors
- 👤 Robert F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:38
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/02; F21V21/04
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |