Patent US2875667A successfully refreshed from Google Patents.
US2875667A
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US
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Assignee: Individual
•
Filing: 1952-02-19
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Granted: 1959-03-03
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Expires: 1972-02-19
Abstract
No abstract record available.
Inventors
- 👤 Chedister Conkling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:59
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/08; G03B23/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE321551C
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US2037601A
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US2338421A
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US2303633A
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US2398639A
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US2363627A
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US2436032A
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US2546124A
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US2526377A
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US2530936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |