US2445765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic remote operating system
Assignee: Unisys Corp
•
Filing: 1941-12-27
•
Granted: 1948-07-27
•
Expires: 1961-12-27
Abstract
No abstract record available.
Inventors
- 👤 Dawson Edward
- 👤 Frederic M Watkins
- 👤 Jr Charles N Schuh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:38
CPC Classifications
B; B64; B64D; B64D7/00; B64D7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1820587A
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US1394520A
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US1387678A
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US1481645A
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US1612118A
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US1530445A
Cited
US1710128A
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US2191792A
Cited
US2217322A
Cited
US2250629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-27 | 1952-01-26 | 1952-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-27 | 1956-01-26 | 1956-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-27 | 1960-01-26 | 1960-07-27 | $7700.00 | Window Closed / Lapsed |