US2592492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible motor
Assignee: Brown Brockmeyer Co
•
Filing: 1949-03-23
•
Granted: 1952-04-08
•
Expires: 1969-03-23
Abstract
No abstract record available.
Inventors
- 👤 James L Trant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:26
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB319684A
Cited
US2213892A
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US2195287A
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US2280888A
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US2279223A
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US2320419A
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US2403369A
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US2380270A
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US2407117A
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US2425312A
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US2473244A
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US2509898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |