US2528491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoemaking apparatus
Assignee: United Shoe Machinery Corp
•
Filing: 1947-12-24
•
Granted: 1950-11-07
•
Expires: 1967-12-24
Abstract
No abstract record available.
Inventors
- 👤 Robert W Bradley
- 👤 Richard C Wildman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:18
CPC Classifications
A; A43; A43D; A43D25/00; A43D25/20; A43D11/00; A43D11/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2000936A
Cited
US2151756A
Cited
US2295690A
Cited
US2293851A
Cited
US2363364A
Cited
US2396004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |