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US2905313A
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Assignee: LILLIAN D BERTRAM
•
Filing: 1957-05-15
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Granted: 1959-09-22
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Expires: 1977-05-15
Abstract
No abstract record available.
Inventors
- 👤 Lillian D Bertram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:40
CPC Classifications
G; G09; G09F; G09F5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1099832A
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US2019250A
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US2118848A
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US2521184A
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US2591276A
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US2670126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |