US2605689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air impeller for refrigerator cars
Assignee: Union Asbestos and Rubber Co
•
Filing: 1946-03-07
•
Granted: 1952-08-05
•
Expires: 1966-03-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur F O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:23
CPC Classifications
B; B61; B61D; B61D27/00; B61D27/0018; B61D27/0027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US585895A
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US717226A
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US1991741A
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US2047156A
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US2049856A
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US2349315A
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US2296635A
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US2324749A
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US2323439A
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US2363974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |