Patent US2847156A successfully refreshed from Google Patents.
US2847156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan assembly
Assignee: STEWART IND Inc
•
Filing: 1954-05-10
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Granted: 1958-08-12
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Expires: 1974-05-10
Abstract
No abstract record available.
Inventors
- 👤 Bleier Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:44
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/281
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US952993A
Cited
FR516627A
Cited
US1548082A
Cited
GB212123A
Cited
US1797455A
Cited
US2020121A
Cited
US1981991A
Cited
US2245989A
Cited
US2284141A
Cited
FR991524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |