US2018857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for dispensing measured quantities of liquefied gas
Assignee: ATMOSPHERIC NITROGEN Corp
•
Filing: 1933-09-20
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Granted: 1935-10-29
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Expires: 1953-09-20
Abstract
No abstract record available.
Inventors
- 👤 Walter H Kniskern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:52
CPC Classifications
F; F17; F17C; F17C7/00; F17C7/02; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/0408; F17C2250/0421; F17C2250/043; F17C2250/0486; F17C2250/0491; F17C2250/06; F17C2250/0605; F17C2250/0636; F17C2250/07; F17C2250/072; F17C2270/00; F17C2270/01; F17C2270/0165; F17C2270/0168; F17C2270/0173; 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) | 1938-10-28 | 1939-04-29 | 1939-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-28 | 1943-04-29 | 1943-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-28 | 1947-04-29 | 1947-10-29 | $7700.00 | Window Closed / Lapsed |