US2579896A
Expired / Lapsed
US
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Magnetic welt holddown
Assignee: United Shoe Machinery Corp
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Filing: 1949-08-24
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Granted: 1951-12-25
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Expires: 1969-08-24
Abstract
No abstract record available.
Inventors
- 👤 Merwin F Ashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:51
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/301; A; A43; A43D; A43D25/00; A43D25/06; A43D25/08; A43D55/00; B29C65/00; B29C65/02; B29C65/04; B29C65/78; B29C65/7841; B29C66/20; B29C66/24; B29C66/244; B29C66/80; B29C66/81; B29C66/814; B29C66/8145; B29C66/81459; B29C66/81463; B29C66/83; B29C66/832; B29C66/8322; B29C66/84; B29C66/841; B29L; B29L2031/00; B29L2031/48; B29L2031/50; B29L2031/504; Y; Y10; Y10S; Y10S425/00; Y10S425/033; Y10S428/00; Y10S428/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2057040A
Cited
US2207020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |