US3479967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric locomotive
Assignee: Individual
•
Filing: 1967-08-25
•
Granted: 1969-11-25
•
Expires: 1987-08-25
Abstract
No abstract record available.
Inventors
- 👤 George Crompton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:34
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/12; H02K7/00; H02K7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US142605A
Cited
US259589A
Cited
US295231A
Cited
US429804A
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US495849A
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US607170A
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US1718100A
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US867007A
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US961293A
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US1049782A
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US1035018A
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US1416610A
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US1915770A
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US1974018A
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US2101208A
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US1950175A
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US2605718A
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US2491158A
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US2469808A
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US2880335A
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US3230406A
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US3069577A
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US3304450A
Cited
US3171051A
Cited
US3182513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |