US1821939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoe stiffener and method of making the same
Assignee: United Shoe Machinery Corp
•
Filing: 1927-09-20
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Granted: 1931-09-08
•
Expires: 1947-09-20
Abstract
No abstract record available.
Inventors
- 👤 Hill Maurice Godfrey
- 👤 Bristow Thomas Hamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:56
CPC Classifications
A; A43; A43B; A43B23/00; A43B23/08; A43B23/081; A43B23/086; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2361
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) | 1934-09-07 | 1935-03-09 | 1935-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-07 | 1939-03-09 | 1939-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-07 | 1943-03-09 | 1943-09-08 | $7700.00 | Window Closed / Lapsed |