Patent US3829351A successfully refreshed from Google Patents.
US3829351A
Expired / Lapsed
US
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Stiffening material for shoe parts
Assignee: BECKWITH CORP
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Filing: 1972-09-28
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Granted: 1974-08-13
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Expires: 1992-09-28
Abstract
Abstract THIS INVENTION PROVIDES A STIFFENING MATERIAL FOR SHOE PARTS COMPRISING A NON-WOVEN FABRIC IMPREGNATED WITH A RESIN. THE FABRIC COMPRISING A SELF-SUSTAINING BATT OF MONWOVEN FIBERS EXTENDING GENERALLY IN THE WIDTHWISE DIRECTION OF THE FABRIC AND A PLURALITY OF ROWS OF YARN STITCHES EXTENDING GENERALLY IN THE LENGTHWISE DIRECTION OF THE FABRIC. THE ROWS ARE SPACED APART A DISTANCE LESS THAN THE AVERAGE LENGTH OF SAID FIBERS.
Inventors
- 👤 A Closson
- 👤 H Beckwith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:13
CPC Classifications
A; A43; A43B; A43B23/00; A43B23/08; A43B23/081; A43B23/086; D; D04; D04H; D04H1/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |