US3035309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic footwear wherein a selected area of the bottom is of a material more resistant to wear than the material forming the boot upper
Assignee: Cambridge Rubber Co
•
Filing: 1958-03-04
•
Granted: 1962-05-22
•
Expires: 1978-03-04
Abstract
No abstract record available.
Inventors
- 👤 Jr George H Bingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:36
CPC Classifications
A; A43; A43B; A43B3/00; A43B3/02; B; B29; B29C; B29C41/00; B29C41/02; B29C41/18; Y; Y10; Y10S; Y10S264/00; Y10S264/60
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
THAT METHOD OF MAKING A RAINPROOF BOOT TO BE WORN OVER A SHOE AND HAVING A PORTION OF THE INNER SURFACE OF ITS BOTTOM WHICH IS MORE RESISTANT TO DAMAGE BY THE SHOE THAT IS THE REMAINDER OF THE BOOT BOTTOM, SAID METHOD COMPRISING AS STEPS: PROVIDING A HOLLOW MOLD; PROVIDING A FIRST PLASTIC, IN FLUID CONDITION, WHICH IS SUITABLE, WHEN FUSED, TO CONSTITUTE THE MAJOR PORTION OF THE BOOT; PROVIDING A SECOND PLASTIC WHICH, WHEN FUSED, IS MORE WEAR-RESISTANT THAN SAID FIRST-NAMED PLASTIC; PROVIDING THE MOLD WITH A PARTIALLY FUSED INNER COATING OF THE FIRST-NAMED
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |