US3561141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-formed shoe insole
Assignee: Vulcan Corp
•
Filing: 1969-08-25
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Granted: 1971-02-09
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Expires: 1989-08-25
Abstract
Abstract AN INSOLE BLANK HAVING A PREFORMED PLASTIC BODY WITH STUCTURALLY JOINED HEEL SEAT AND SHANK PORTIONS AND WHICH CAN BE DIRECTLY INCORPORATED INTO A SHOE STRUCTURE BY CONVENTIONAL LASTING METHODS TO PRODUCE AN IMPROVED SHOE.
Inventors
- 👤 Jacob W Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:13
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/14; A43B7/1405; A43B7/141; A43B13/00; A43B13/38; A43B13/41
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |