Patent US3621489A successfully refreshed from Google Patents.
US3621489A
Expired / Lapsed
US
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Shin guard
Assignee: Individual
•
Filing: 1969-08-11
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Granted: 1971-11-23
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Expires: 1989-08-11
Abstract
Abstract THE SHIN IS PROTECTED AGAINST THE PRESSURE FROM THE UPPERS OF A MOUNTAIN CLIMBING OR SKI BOOT BY AN AXIALLY SLOTTED, FLEXIBLE SLEEVE WHICH FITS AROUND THE SHIN AND EXTENDS FROM THE ANKLE TO SEVERAL CENTIMETERS ABOVE THE BOOT. A SOFT LINING IS PROVIDED IN THE SLEEVE.
Inventors
- 👤 Edmund Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:57
CPC Classifications
A; A63; A63B; A63B71/00; A63B71/08; A63B71/12; A63B71/1225; A63B2071/1258; A63B2071/1266
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |