US2872548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor starters
Assignee: Federal Pacific Electric Co
•
Filing: 1955-12-01
•
Granted: 1959-02-03
•
Expires: 1975-12-01
Abstract
No abstract record available.
Inventors
- 👤 Paul M Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:32
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/74; H01H71/7427; H01H71/7445; H01H83/00; H01H83/20; H01H83/22; H01H83/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2029980A
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US2064644A
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US2253390A
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US2318279A
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US2411351A
Cited
GB553154A
Cited
GB624581A
Cited
GB624598A
Cited
GB686688A
Cited
US2656440A
Cited
US2749407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |