Patent US2897484A successfully refreshed from Google Patents.
US2897484A
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Assignee: International Business Machines Corp
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Filing: 1956-01-23
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Granted: 1959-07-28
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Expires: 1976-01-23
Abstract
No abstract record available.
Inventors
- 👤 Norman A Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:16
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/02; G05; G05B; G05B5/00; G05B5/01; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1427; G05D3/149; G05G; G05G5/00; G05G5/06; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5521; G11B5/5526; G11B5/553; G05G2700/00; G05G2700/04; G05G2700/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |