Patent US2686352A successfully refreshed from Google Patents.
US2686352A
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US
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Method of forging brake heads
Assignee: American Steel Foundries
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Filing: 1952-01-31
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Granted: 1954-08-17
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Expires: 1972-01-31
Abstract
No abstract record available.
Inventors
- 👤 Sabo Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:58
CPC Classifications
B; B21; B21K; B21K7/00; B21K7/12; B21K7/14; B21J; B21J5/00; B21J5/02; B21J5/027; F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/06; F16D65/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1656930A
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US1625804A
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US1707778A
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US1697540A
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US1791187A
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US1997871A
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US2064956A
Cited
US2067269A
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US2268286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |