US3741855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low friction bearing materials
Assignee: AMPE IND PROD Ltd
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Filing: 1971-05-18
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Granted: 1973-06-26
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Expires: 1991-05-18
Abstract
Abstract A BEARING MATERIAL COMPRISES A WOVEN FABRIC OF MIXED FIBERS OF LOW FRICTION MATERIAL AND FIBERS OF HIGH MODULUS MATERIAL AND PARTICULRLY, CARBON FIBERS.
Inventors
- 👤 M Harrison
- 👤 R Benion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:52
CPC Classifications
D; D03; D03D; D03D15/00; D03D15/20; D03D15/242; D03D15/267; D03D15/275; D03D15/283; D03D15/50; D03D15/58; D10; D10B; D10B2101/00; D10B2101/02; D10B2101/06; D10B2101/10; D10B2101/12; D10B2321/00; D10B2321/04; D10B2321/042; D10B2401/00; D10B2401/06; D10B2401/062; D10B2401/063; Y; Y10; Y10S; Y10S273/00; Y10S273/23; Y10S277/00; Y10S277/935; Y10S277/936; Y10S277/937; Y10S277/944; Y10S277/945; Y10S277/946; Y10S384/00; Y10S384/90; Y10S384/907; Y10S384/911; Y10S428/00; Y10S428/902; Y10T; Y10T442/00; Y10T442/30; Y10T442/3179; Y10T442/322; Y10T442/3228; Y10T442/3236; Y10T442/3252; Y10T442/3301; Y10T442/3309
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |