Patent US3506775A successfully refreshed from Google Patents.
US2706476A
Expired / Lapsed
US
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Device for preventing calluses and skin irritations
Assignee: Individual
•
Filing: 1953-03-23
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Granted: 1955-04-19
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Expires: 1973-03-23
Abstract
No abstract record available.
Inventors
- 👤 Pauline V Diamond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:42
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/06; A61F13/063; A61F13/15; A61F13/84; A61F13/8405; A61F2013/00089; A61F2013/00102; A61F2013/00361; A61F2013/00365; A61F2013/00387; A61F2013/15008; A61F2013/15024; A61F13/505; A61F2013/5055; A61F13/53; A61F2013/530802; A61F13/56; A61F2013/5666; A61F2013/5672
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) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |