US3105891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoe bottom heaters
Assignee: United Shoe Machinery Corp
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Filing: 1961-12-22
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Granted: 1963-10-01
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Expires: 1981-12-22
Abstract
No abstract record available.
Inventors
- 👤 Gibbard Thomas
- 👤 Francis B Sharp
- 👤 Salway-Waller Malcolm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:29
CPC Classifications
A; A43; A43D; A43D25/00; A43D25/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
137 words
IN APPARATUS FOR HEATING THE BOTTOM OF A SHOE HAVING AN ATTACHED HIGH HEEL, IN COMBINATION, A SUPPORT FOR THE SHOE, SAID SUPPORT HAVING AN APERTURED PORTION AND A CLOSED PORTION AND BEING ADAPTED TO SUPPORT A SHOE WITH ITS FOREPART ON THE APERTURED PORTION WITH ITS HEEL RESTING ON THE CLOSED PORTION, A RADIANT HEATER ARRANGED TO RADIATE ENERGY THROUGH THE APERTURED PORTION OF THE SUPPORT FOR HEATING THE FOREPART OF THE SHOE, A HOLLOW PILLAR DISPOSED ON THE CLOSED PORTION OF THE SUPPORT, THE INTERIOR OF SAID PILLAR COMMUNICATING WITH A SOURCE OF PRESSURIZED HEATED AIR, SAID PILLAR HAVING SOLID VERTICAL SIDE WALLS AND A PERFORATED CENTRAL WALL HAVING A VERTICAL FACE TO OPPOSE THE HEEL BREAST PORTION OF THE SHOE BOTTOM AND AN INCLINED FACE TO OPPOSE THE SHANK PORTION OF THE SHOE BOTTOM.
References Cited (Backward Citations)
US1517434A
Cited
GB341788A
Cited
US1910700A
Cited
US2239957A
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US2662964A
Cited
US2657029A
Cited
US2672545A
Cited
US2775677A
Cited
US2970331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |