US2741430A
Expired / Lapsed
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Differential control mechanisms
Assignee: International Business Machines Corp
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Filing: 1951-12-31
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Granted: 1956-04-10
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Expires: 1971-12-31
Abstract
No abstract record available.
Inventors
- 👤 Hans P Luhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:38
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06; G06F3/08; F; F16; F16H; F16H48/00; F16H48/06; F16H48/08; F16H48/20; F16H48/24; F16H48/295; F16H48/30; F16H48/34; F16H2048/204; F16H2048/343; F16H2048/346
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) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |