Patent US1684108A successfully refreshed from Google Patents.
Patent US3647589A successfully refreshed from Google Patents.
US3647589A
Expired / Lapsed
US
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Method of manufacturing rubber wear cover for rollers and method of applying same
Assignee: Stahlgruber Otto Gruber GmbH and Co
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Filing: 1970-06-23
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Granted: 1972-03-07
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Expires: 1990-06-23
Abstract
Abstract A RUBBER COVER FOR PROTECTING CONVEYOR BELT ROLLERS AND RETURN IDLERS IS CHARACTERIZED BY AN OUTER WEAR RESISTANT VULCANIZED RUBBER LAYER AND AN INNER CONNECTING LAYER OF UNVULCANIZED COLD VULCANIZABLE RUBBER MIXTURE.
Inventors
- 👤 Alois Peter Felden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:48
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; B65G39/07; B29; B29C; B29C41/00; B29C41/02; B29C41/22; B29C63/00; B29C63/0017; B29C63/18; B29C63/20; B29D; B29D23/00; B29D23/001; B29K; B29K2021/00; B29L; B29L2023/00
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |