Patent US2657518A successfully refreshed from Google Patents.
US2657518A
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US
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Assignee: Unisys Corp
•
Filing: 1950-09-30
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Granted: 1953-11-03
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Expires: 1970-09-30
Abstract
No abstract record available.
Inventors
- 👤 George B Hill
- 👤 Donald L King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:55
CPC Classifications
A; A01; A01D; A01D78/00; A01D78/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2162506A
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US2336117A
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US2497729A
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US2566724A
Cited
US2518389A
Cited
US2514561A
Cited
US2505704A
Cited
US2595788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |