Patent US3398221A successfully refreshed from Google Patents.
US3398221A
Expired / Lapsed
US
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Method of producing shoe inserts
Assignee: Individual
•
Filing: 1965-06-09
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Granted: 1968-08-20
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Expires: 1985-06-09
Abstract
No abstract record available.
Inventors
- 👤 Sherman Lawrence
- 👤 Sherman Garry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:42
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/14; A43B7/28; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |