Patent US2578591A successfully refreshed from Google Patents.
US2578591A
Expired / Lapsed
US
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Athletic shoe calk
Assignee: Individual
•
Filing: 1947-08-07
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Granted: 1951-12-11
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Expires: 1967-08-07
Abstract
No abstract record available.
Inventors
- 👤 Fred C Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:57
CPC Classifications
A; A43; A43C; A43C15/00; A43C15/16; A43C15/161
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21173E
Cited
US736121A
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US928947A
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US1948885A
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US1982588A
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GB533102A
Cited
US2274559A
Cited
US2290792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |