US2663772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: THOMAS E WOLFROM
•
Filing: 1952-02-14
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Granted: 1953-12-22
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Expires: 1972-02-14
Abstract
No abstract record available.
Inventors
- 👤 Robert J Cochrane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:04
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/18; B60T17/22; B60T17/225; G; G01; G01F; G01F23/00; G01F23/30; G01F23/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1719078A
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US829103A
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US1326578A
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US1509998A
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DE683935C
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US2161441A
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US2191216A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |