Patent US2487863A successfully refreshed from Google Patents.
US2487863A
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Tank car unloading system
Assignee: Phillips Petroleum Co
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Filing: 1946-07-01
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Granted: 1949-11-15
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Expires: 1966-07-01
Abstract
No abstract record available.
Inventors
- 👤 Owen L Garretson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:05
CPC Classifications
F; F17; F17C; F17C7/00; F17C7/02; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0329; F17C2205/0338; F17C2221/00; F17C2221/03; F17C2221/032; F17C2221/033; F17C2221/035; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2223/04; F17C2223/042; F17C2223/046; F17C2223/047; F17C2225/00; F17C2225/01; F17C2225/0146; F17C2225/0153; F17C2225/04; F17C2225/042; F17C2225/043; F17C2225/044; F17C2227/00; F17C2227/01; F17C2227/0128; F17C2227/0135; F17C2227/04; F17C2227/041; F17C2227/042; F17C2250/00; F17C2250/01; F17C2250/06; F17C2250/0605; F17C2250/0636; F17C2270/00; F17C2270/01; F17C2270/0165; F17C2270/0168; F17C2270/0178; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/313; Y10T137/6416; Y10T137/6552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US678986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |