US3027658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible shoe
Assignee: Individual
•
Filing: 1961-02-27
•
Granted: 1962-04-03
•
Expires: 1981-02-27
Abstract
No abstract record available.
Inventors
- 👤 Rowena N Rigsby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:50
CPC Classifications
A; A43; A43B; A43B3/00; A43B3/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1291958A
Cited
US2391720A
Cited
US2513005A
Cited
US2745196A
Cited
US2756518A
Cited
US2846784A
Cited
US2803894A
Cited
US2926434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |