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US3001306A
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Assignee: Individual
•
Filing: 1956-02-20
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Granted: 1961-09-26
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Expires: 1976-02-20
Abstract
No abstract record available.
Inventors
- 👤 Walter B Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:01
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/02; B; B42; B42F; B42F21/00; G09F2003/0214
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US486755A
Cited
US1495358A
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US1819251A
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US1853098A
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US2317899A
Cited
US2292272A
Cited
US2507659A
Cited
US2505250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |