Patent US2885948A successfully refreshed from Google Patents.
US2885948A
Expired / Lapsed
US
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Daylight dome ventilator construction
Assignee: SAWCO Inc A CORP
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Filing: 1956-10-01
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Granted: 1959-05-12
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Expires: 1976-10-01
Abstract
No abstract record available.
Inventors
- 👤 Ned N Oshins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:53
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/03; E04D13/0325; F; F24; F24F; F24F7/00; F24F7/02; F24F7/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1264056A
Cited
US1792514A
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US2157609A
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US2665625A
Cited
US2665626A
Cited
US2692548A
Cited
US2711126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |