US3447251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoe with air cushion sole and method for manufacturing the shoe
Assignee: Individual
•
Filing: 1967-05-01
•
Granted: 1969-06-03
•
Expires: 1987-05-01
Abstract
No abstract record available.
Inventors
- 👤 Erich Drexler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:12
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/06; B29D35/061; A; A43; A43B; A43B13/00; A43B13/02; A43B13/04; A43B13/14; A43B13/18; A43B13/20; A43B13/28; B29D35/065; B29D35/08; B29D35/081; B29D35/082; B29D35/085; B29D35/087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1562040A
Cited
US2129106A
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US2363456A
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US2481389A
Cited
GB882341A
Cited
US3066426A
Cited
US3185752A
Cited
FR1392836A
Cited
US3319301A
Cited
US3305895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |