Patent US2456569A successfully refreshed from Google Patents.
US2007251A
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Process and apparatus for dispensing measured quantities of liquefied gas
Assignee: ATMOSPHERIC NITROGEN Corp
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Filing: 1934-04-14
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Granted: 1935-07-09
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Expires: 1954-04-14
Abstract
No abstract record available.
Inventors
- 👤 Walter H Kniskern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:31
CPC Classifications
F; F17; F17C; F17C7/00; F17C7/02; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0332; F17C2221/00; F17C2221/03; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/03; F17C2223/033; F17C2225/00; F17C2225/01; F17C2225/0146; F17C2225/0153; F17C2225/03; F17C2225/033; F17C2227/00; F17C2227/01; F17C2227/0128; F17C2227/0157; F17C2227/0192; F17C2227/03; F17C2227/0337; F17C2227/0367; F17C2227/0388; F17C2227/039; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/043; F17C2260/00; F17C2260/02; F17C2260/024; F17C2270/00; F17C2270/01; F17C2270/0165; F17C2270/0168; F17C2270/0171; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2937
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-07-08 | 1939-01-07 | 1939-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-07-08 | 1943-01-07 | 1943-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-07-08 | 1947-01-07 | 1947-07-09 | $7700.00 | Window Closed / Lapsed |