Patent US2443588A successfully refreshed from Google Patents.
US2443588A
Expired / Lapsed
US
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Method of making slip lasted shoes
Assignee: Individual
•
Filing: 1946-03-23
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Granted: 1948-06-22
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Expires: 1966-03-23
Abstract
No abstract record available.
Inventors
- 👤 Fred L Ayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:12
CPC Classifications
A; A43; A43B; A43B9/00; A43B9/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2384431A
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US880515A
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US1161332A
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US1729204A
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US2067845A
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US2111705A
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US2151020A
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US2318014A
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US2325682A
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US2377570A
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US2379681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-22 | 1951-12-22 | 1952-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-22 | 1955-12-22 | 1956-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-22 | 1959-12-22 | 1960-06-22 | $7700.00 | Window Closed / Lapsed |