Patent US2956830A successfully refreshed from Google Patents.
US2956830A
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US
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Assignee: Individual
•
Filing: 1954-01-15
•
Granted: 1960-10-18
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Expires: 1974-01-15
Abstract
No abstract record available.
Inventors
- 👤 James T Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:21
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/26; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/0281; G11B17/08; G11B17/12; G11B17/16; G11B17/162; G11B17/165
Claims Analysis
Total Claims: 0
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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) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |