US2981926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Hart Manufacturing Co
•
Filing: 1957-11-20
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Granted: 1961-04-25
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Expires: 1977-11-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond H Boardman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:17
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/28; H01R4/48; H01R4/4881; H01R25/00; H01R25/16; H01R25/161; H01R25/162; H02; H02G; H02G5/00; H02G5/06; H02G5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE214271C
Cited
US2739208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |