US3375684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene stretch stocking and method
Assignee: LEATH MCCARTHY AND MAYNARD Inc
•
Filing: 1965-03-02
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Granted: 1968-04-02
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Expires: 1985-03-02
Abstract
No abstract record available.
Inventors
- 👤 Howard M Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:49
CPC Classifications
D; D04; D04B; D04B1/00; D04B1/22; D04B1/24; D04B1/26; D10; D10B; D10B2321/00; D10B2321/02; D10B2321/022; D10B2401/00; D10B2401/04; D10B2401/041; D10B2401/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A STRETCHABLE SEAMLESS POLYPROPYLENE STOCKING COMPRISING A PLURALITY OF ALTERNATE AND INTERMEDIATE KNITTED HEAT SET COURSES EACH HAVING OPPOSITELY INCLINED RELAXED KNITTED STITCHES, EACH OF THE COURSES FORMED FROM A TWISTED UNTREATED MONOFILAMENT POLYPROPYLENE YARN WITH THE TWIST IN ALTERNATE COURSES BEING IN ONE DIRECTION AND THE YARN TWIST IN INTERMEDIATE COURSES BEING IN OPPOSITE DIRECTION.
Claim 2
Dependent Claim
56 words
A STRETCHABLE SEAMLESS POLYPROPYLENE STOCKING COMPRISING A PLURALITY OF ALTERNATE AND INTERMEDIATE KNITTED HEAT SET COURSES EACH HAVING OPPOSITELY INCLINED RELAXED KNITTED STITCHES, EACH OF THE COURSES FORMED FROM A TWISTED UNTREATED MONOFILAMENT POLYPROPYLENE YARN WITH THE TWIST IN ALTERNATE COURSES BEING IN ONE DIRECTION AND THE YARN TWIST IN INTERMEDIATE COURSES BEING IN OPPOSITE DIRECTION.
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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) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |