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US3486151A
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Assignee: ALBERT A CANFIELD
•
Filing: 1968-02-26
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Granted: 1969-12-23
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Expires: 1988-02-26
Abstract
No abstract record available.
Inventors
- 👤 Albert A Canfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:19
CPC Classifications
H; H01; H01H; H01H61/00; H01H61/06; H01H61/063; H01H23/00; H01H23/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2367631A
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US2467745A
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US2556927A
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US2571654A
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US2750467A
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US2750468A
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US2717331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |