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Patent US2875309A successfully refreshed from Google Patents.
US2875309A
Expired / Lapsed
US
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Electrical resistors
Assignee: Painton and Co Ltd
•
Filing: 1956-08-13
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Granted: 1959-02-24
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Expires: 1976-08-13
Abstract
No abstract record available.
Inventors
- 👤 Pearce Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:40
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/14; H01C1/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2334843A
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US2278045A
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US2355611A
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CH242718A
Cited
GB575297A
Cited
US2487057A
Cited
US2559988A
Cited
US2671950A
Cited
US2701410A
Cited
GB735726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |