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US2929530A
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US
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Assignee: Individual
•
Filing: 1954-12-13
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Granted: 1960-03-22
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Expires: 1974-12-13
Abstract
No abstract record available.
Inventors
- 👤 Albert M Sargent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:35
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1210800A
Cited
US1261861A
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US1421645A
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US1519614A
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US2064241A
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US2081078A
Cited
US2102094A
Cited
GB662661A
Cited
US2660294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |