Patent US2659991A successfully refreshed from Google Patents.
US2659991A
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Assignee: Individual
•
Filing: 1950-03-15
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Granted: 1953-11-24
•
Expires: 1970-03-15
Abstract
No abstract record available.
Inventors
- 👤 Daniel H Strayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:30
CPC Classifications
G; G09; G09F; G09F1/00; G09F1/10; G09F1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2540221A
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US2499049A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |