US2812453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical motor apparatus
Assignee: Oak Manufacturing Co
•
Filing: 1954-08-03
•
Granted: 1957-11-05
•
Expires: 1974-08-03
Abstract
No abstract record available.
Inventors
- 👤 Edward J Mastney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:59
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/14; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/18; Y10T74/1856; Y10T74/18888
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1312787A
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US780222A
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US1077706A
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US1225736A
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US1334728A
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US2430940A
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US2449178A
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US2576609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |