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Patent US2698989A successfully refreshed from Google Patents.
US2698989A
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Method of making a brake drum air-cooling device
Assignee: Individual
•
Filing: 1949-08-13
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Granted: 1955-01-11
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Expires: 1969-08-13
Abstract
No abstract record available.
Inventors
- 👤 Lyon George Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:28
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/26; B21D53/265; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49796
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1954532A
Cited
US1881002A
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US1990746A
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US2089972A
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US2190669A
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US2099803A
Cited
US2264946A
Cited
US2312159A
Cited
US2366224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-10 | 1958-07-12 | 1959-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-10 | 1962-07-12 | 1963-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-10 | 1966-07-12 | 1967-01-11 | $7700.00 | Window Closed / Lapsed |