US2989978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensate drain and antifreeze injector
Assignee: Bendix Westinghouse Automotive Air Brake Co
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Filing: 1958-11-14
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Granted: 1961-06-27
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Expires: 1978-11-14
Abstract
No abstract record available.
Inventors
- 👤 Raymond S Gresko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:37
CPC Classifications
F; F16; F16T; F16T1/00; F16T1/12; F16T1/14; Y; Y10; Y10S; Y10S55/00; Y10S55/17; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3102; Y10T137/3105; Y10T137/8593; Y10T137/86919; Y10T137/87917; Y10T137/87981; Y10T137/87997; Y10T137/88005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |