US2428299A
Expired / Lapsed
US
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Friction elements bonded with a reaction product of polymerized linseed oil, sulfur and phenol-aldehyde resin mixed with a butadieneacrylonitrile copolymer
Assignee: American Brake Shoe Co
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Filing: 1947-02-27
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Granted: 1947-09-30
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Expires: 1967-02-27
Abstract
No abstract record available.
Inventors
- 👤 Ray E Spokes
- 👤 Emil C Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:27
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/021; F16D69/022
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) | 1950-09-29 | 1951-03-31 | 1951-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-29 | 1955-03-31 | 1955-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-29 | 1959-03-31 | 1959-09-30 | $7700.00 | Window Closed / Lapsed |