Patent US3040452A successfully refreshed from Google Patents.
US3040452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lift for shoe heel
Assignee: Whitso Inc
•
Filing: 1960-01-21
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Granted: 1962-06-26
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Expires: 1980-01-21
Abstract
No abstract record available.
Inventors
- 👤 Jr John B Whitted
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:07
CPC Classifications
A; A43; A43B; A43B21/00; A43B21/24; A43B21/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1844248A
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US1949940A
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US2189812A
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US2656621A
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US2798313A
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US2937461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |