Patent US2691694A successfully refreshed from Google Patents.
US2691694A
Expired / Lapsed
US
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Polytetrafluoroethylene-glass fiber insulated electrical conductors
Assignee: EIDP Inc
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Filing: 1949-04-09
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Granted: 1954-10-12
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Expires: 1969-04-09
Abstract
No abstract record available.
Inventors
- 👤 Young Harry Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:15
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/443; H01B3/445; H01B7/00; H01B7/17; H01B7/28; H01B7/2806; H01B7/29
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
AN ELECTRICAL CONDUCTOR PROVIDED WITH AN INSULATING COVERING COMPRISING A WRAPPING OF A POLYMERIC MATERIAL TAPE, A WRAPPING OF A PREIMPREGNATED WOVEN GLASS FABRIC, A SUPERPOSED WRAPPING OF GLASS BRAID, AND A COATING OVER THE GLASS BRAID OF A POLYMERIC MATERIAL SUSPENSOID, THE TAPE, WOVEN GLASS FABRIC IMPREGNATED, AND SUSPENSOID BEING A POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYTETRAFLUOROETHYLENE AND COPOLYMERS OF TETRAFLUOROETHYLENE WITH ANOTHER POLYMERIZABLE ORGANIC COMPOUND CONTAINING AN ETHYLENIC DOUBLE BOND, SAID POLYMERIC MATERIAL BEING FUSED INTO A CONTINUOUS MASS WHICH FIRMLY BONDS THE TAPE, THE IMPREGNATED WOVEN GLASS FABRIC, AND THE SUPERPOSED GLASS BRAID TO EACH OTHER AND ADHERES THE BONDED MASS TO THE CONDUCTOR.
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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) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |