US2793553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Field lathe for shaping conduit ends
Assignee: Individual
•
Filing: 1952-11-18
•
Granted: 1957-05-28
•
Expires: 1972-11-18
Abstract
No abstract record available.
Inventors
- 👤 Asa L Mathews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:05
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/16; B23B5/161; B23B5/162; B23D; B23D21/00; B23D21/06; B23D21/08; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2522
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US497105A
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US567658A
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US938058A
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US1099215A
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US1155337A
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US1691045A
Cited
US1823959A
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US2537916A
Cited
US2607376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |