US2590091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic process control
Assignee: Unisys Corp
•
Filing: 1946-04-03
•
Granted: 1952-03-25
•
Expires: 1966-04-03
Abstract
No abstract record available.
Inventors
- 👤 George C Devol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:10
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/12; G05B19/16; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US900392A
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US1959804A
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US1988458A
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US1998939A
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US2116593A
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US2121211A
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US2414690A
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US2313136A
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US2363336A
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US2423440A
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US2407657A
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US2457558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |