US2931495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display package
Assignee: NATIONAL CLEVELAND CORP
•
Filing: 1956-10-11
•
Granted: 1960-04-05
•
Expires: 1976-10-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward Bowman Stratton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:55
CPC Classifications
G; G09; G09F; G09F5/00; Y; Y10; Y10T; Y10T24/00; Y10T24/36; Y10T24/3687
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR958491A
Cited
US2151503A
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US2210509A
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US2568625A
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US2705556A
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US2690593A
Cited
US2750719A
Cited
US2720969A
Cited
US2757793A
Cited
US2796985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |