Patent US2845855A successfully refreshed from Google Patents.
US2845855A
Expired / Lapsed
US
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Combination light fixture and ventilating unit
Assignee: Pyle National Co
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Filing: 1956-11-14
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Granted: 1958-08-05
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Expires: 1976-11-14
Abstract
No abstract record available.
Inventors
- 👤 Lester W Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:36
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/078; F21; F21S; F21S8/00; F21S8/02; F21V; F21V33/00; F21V33/0088; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2010322A
Cited
US2190937A
Cited
US2310414A
Cited
US2359021A
Cited
US2564334A
Cited
GB760850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |