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Patent US2609668A successfully refreshed from Google Patents.
US2609668A
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Method and apparatus for pumping volatile liquids
Assignee: MW Kellogg Co
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Filing: 1948-10-23
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Granted: 1952-09-09
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Expires: 1968-10-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas N Dalton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:24
CPC Classifications
F; F17; F17C; F17C7/00; F17C7/02; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/03; F17C2201/035; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0326; F17C2205/0332; F17C2221/00; F17C2221/01; F17C2221/011; F17C2221/012; F17C2221/03; F17C2221/032; F17C2221/035; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2227/00; F17C2227/01; F17C2227/0128; F17C2227/0135; F17C2227/03; F17C2227/0337; F17C2227/0341; F17C2227/0367; F17C2227/0388; F17C2227/039; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/0408; F17C2250/0413; F17C2250/06; F17C2250/0605; F17C2250/0631; F17C2250/0636; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1371427A
Cited
FR668512A
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DE495795C
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US2021394A
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US2292375A
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US2325931A
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US2346253A
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US2451151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |