Patent US3387447A successfully refreshed from Google Patents.
US3387447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traveler rings
Assignee: Celanese Corp
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Filing: 1965-12-27
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Granted: 1968-06-11
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Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Harlan M Trammell
- 👤 Wade J Truesdale
- 👤 Jr John A Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:20
CPC Classifications
D; D01; D01H; D01H7/00; D01H7/02; D01H7/52; D01H7/60; D01H7/602
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
TRAVELER RING OF A COMPOSITION COMPRISING A MATRIX OF ABOUT 95 TO 75 PERCENT POLYACETAL RESIN AND FROM ABOUT 5 TO 25 PERCENT PARTICULATE POLYTETRAFLUOROETHYLENE RESIN.
Claim 2
Dependent Claim
26 words
TRAVELER RING OF A COMPOSITION COMPRISING A MATRIX OF ABOUT 95 TO 75 PERCENT POLYACETAL RESIN AND FROM ABOUT 5 TO 25 PERCENT PARTICULATE POLYTETRAFLUOROETHYLENE RESIN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |