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Patent US3041747A successfully refreshed from Google Patents.
US3041747A
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US
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Heel with detachable lift
Assignee: Individual
•
Filing: 1959-08-28
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Granted: 1962-07-03
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Expires: 1979-08-28
Abstract
No abstract record available.
Inventors
- 👤 Pfeil Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:21
CPC Classifications
A; A43; A43B; A43B21/00; A43B21/36; A43B21/46; A43B21/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US86955A
Cited
DE356954C
Cited
US1286054A
Cited
GB428197A
Cited
FR1146380A
Cited
US2852864A
Cited
US2806302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |