US3175292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective shoe construction
Assignee: International Shoe Co
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Filing: 1963-02-21
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Granted: 1965-03-30
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Expires: 1983-02-21
Abstract
No abstract record available.
Inventors
- 👤 Macquaid Craig
- 👤 Leslie R Heideman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:09
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A PROTECTIVE SHOE: A SOLE, AN UPPER HAVING A TOE PORTION PERMANENTLY UNITED AT ITS EDGES TO THE SOLE AND INCLUDING A GUARD MEANS PERMANENTLY BUILD INTO THE SHOE MATERIAL RELATIVELY STIFF SO AS TO TRANSMIT FORCES APPLIED DOWNWARDLY UPON IT TO THE SOLE; THE UPPER ALSO HAVING INSTEP-COVERING PORTIONS TO FIT OVER THE INSTEP OF A WEARER, THE LAST NAMED PORTIONS BEING UNITED AT THEIR EDGES TO THE SOLE AND TO THE TOE PORTION, AND EXTENDING FROM THE TOE PORTION UPWARDLY OVER THE INSTEP; AN INSTEP GUARD OF RELATIVELY RIGID MATERIAL FITTING OVER THE INSTEP PART OF THE SHOE, AT THE TOP THEREOF, HAVING ITS LOWER FORWARD END OVERLYING THE TOE PORTION TOWARD THE REAR
Claim 2
Dependent Claim
117 words
IN A PROTECTIVE SHOE: A SOLE, AN UPPER HAVING A TOE PORTION PERMANENTLY UNITED AT ITS EDGES TO THE SOLE AND INCLUDING A GUARD MEANS PERMANENTLY BUILD INTO THE SHOE MATERIAL RELATIVELY STIFF SO AS TO TRANSMIT FORCES APPLIED DOWNWARDLY UPON IT TO THE SOLE; THE UPPER ALSO HAVING INSTEP-COVERING PORTIONS TO FIT OVER THE INSTEP OF A WEARER, THE LAST NAMED PORTIONS BEING UNITED AT THEIR EDGES TO THE SOLE AND TO THE TOE PORTION, AND EXTENDING FROM THE TOE PORTION UPWARDLY OVER THE INSTEP; AN INSTEP GUARD OF RELATIVELY RIGID MATERIAL FITTING OVER THE INSTEP PART OF THE SHOE, AT THE TOP THEREOF, HAVING ITS LOWER FORWARD END OVERLYING THE TOE PORTION TOWARD THE REAR
References Cited (Backward Citations)
US3108386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |