US2637145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for forming arcuate contours
Assignee: MARTIN R CHIRGWIN
•
Filing: 1949-11-12
•
Granted: 1953-05-05
•
Expires: 1969-11-12
Abstract
No abstract record available.
Inventors
- 👤 Roy E Wasley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:36
CPC Classifications
B; B24; B24B; B24B19/00; B24B19/26; B24B19/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1649695A
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US1662078A
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US2102915A
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US2225806A
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US2304530A
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US2325826A
Cited
US2345161A
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US2441004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |