Patent US2998104A successfully refreshed from Google Patents.
US2998104A
Expired / Lapsed
US
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Automatic slack adjuster
Assignee: Westinghouse Air Brake Co
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Filing: 1958-07-02
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Granted: 1961-08-29
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Expires: 1978-07-02
Abstract
No abstract record available.
Inventors
- 👤 Glenn T Mcclure
- 👤 George K Newell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:11
CPC Classifications
B; B61; B61H; B61H15/00; B61H15/0035; B61H15/0042; B61H15/005; B61H15/0057
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US636874A
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US1479701A
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US1837473A
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US2109036A
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US2203890A
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US2283966A
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US2648408A
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US2646140A
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US2747700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |