US3021572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a bottom structure for shoes
Assignee: Marbill Co
•
Filing: 1957-03-27
•
Granted: 1962-02-20
•
Expires: 1977-03-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Maurice C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:12
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1751766A
Cited
US2256329A
Cited
US2382784A
Cited
US2671932A
Cited
GB725100A
Cited
US2696024A
Cited
US2770557A
Cited
US2880468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |