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US2825779A
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Assignee: Electrical Apparatus Co Ltd
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Filing: 1956-01-10
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Granted: 1958-03-04
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Expires: 1976-01-10
Abstract
No abstract record available.
Inventors
- 👤 Waldo J Kelleigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:31
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/26; H01H13/36; H01H13/40; H01H13/42; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/18896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1845998A
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US1960020A
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US2318734A
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US2304400A
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US2255330A
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US2354635A
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US2448230A
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US2444529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |