US2507638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming plastic fastenings
Assignee: United Shoe Machinery Corp
•
Filing: 1947-04-03
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Granted: 1950-05-16
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Expires: 1967-04-03
Abstract
No abstract record available.
Inventors
- 👤 James F Leahy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:23
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/56; B29C65/60; B29C65/601; B29C65/602; A; A43; A43D; A43D100/00; A43D100/02; B29C57/00; B29C66/00; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81421; B29C66/81423; B29C66/81427; B29C66/81429; B29C66/83; B29C66/832; B29C66/8322; B29C66/70; B29C66/71; Y; Y10; Y10S; Y10S264/00; Y10S264/73; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/51; Y10T29/5147; Y10T29/53; Y10T29/53709; Y10T29/53717
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |