Patent US2616533A successfully refreshed from Google Patents.
US2616533A
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US
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Integrated ceiling lighting system
Assignee: Austin Co
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Filing: 1948-08-12
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Granted: 1952-11-04
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Expires: 1968-08-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph K Gannett
- 👤 Brown W Saveland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:29
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/32; F; F21; F21S; F21S8/00; F21S8/02; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1997168A
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US2003342A
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US2221001A
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US2232499A
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US2291489A
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US2376715A
Cited
US2338521A
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US2291490A
Cited
US2436635A
Cited
US2516660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |