Patent US2866646A successfully refreshed from Google Patents.
US2866646A
Expired / Lapsed
US
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Exhibiting devices
Assignee: UNDERHILL INVESTORS Inc
•
Filing: 1953-12-09
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Granted: 1958-12-30
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Expires: 1973-12-09
Abstract
No abstract record available.
Inventors
- 👤 George C Kindred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:13
CPC Classifications
G; G09; G09F; G09F25/00; G11; G11B; G11B33/00; G11B33/02; G11B33/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US628194A
Cited
US1561991A
Cited
FR665320A
Cited
US2118320A
Cited
US2305086A
Cited
US2375043A
Cited
US2596016A
Cited
FR969625A
Cited
US2615993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |