Patent US2335720A successfully refreshed from Google Patents.
US2335720A
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Method and machine for metalworking
Assignee: GEORGE F BRYANT
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Filing: 1940-04-29
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Granted: 1943-11-30
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Expires: 1960-04-29
Abstract
No abstract record available.
Inventors
- 👤 Lucien I Yeomans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:05
CPC Classifications
B; B23; B23D; B23D23/00; B23D23/02; Y; Y10; Y10S; Y10S83/00; Y10S83/916; Y10T; Y10T83/00; Y10T83/04; Y10T83/0524; Y10T83/0572; Y10T83/0596; Y10T83/384; Y10T83/387; Y10T83/395; Y10T83/398; Y10T83/403; Y10T83/546; Y10T83/748; Y10T83/7587
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-11-29 | 1947-05-31 | 1947-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-11-29 | 1951-05-31 | 1951-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-11-29 | 1955-05-31 | 1955-11-30 | $7700.00 | Window Closed / Lapsed |