Patent US2985090A successfully refreshed from Google Patents.
US2985090A
Expired / Lapsed
US
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Apparatus for combining air supply and exhaust with lighting equipment
Assignee: Day Brite Lighting Inc
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Filing: 1959-01-09
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Granted: 1961-05-23
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Expires: 1979-01-09
Abstract
No abstract record available.
Inventors
- 👤 Murray L Quin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:43
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/1413; F21; F21V; F21V33/00; F21V33/0088; F24F13/02; F24F13/06; F24F13/078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |