Patent US2579321A successfully refreshed from Google Patents.
US2579321A
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US
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Apparatus for producing gas under pressure
Assignee: Individual
•
Filing: 1948-04-09
•
Granted: 1951-12-18
•
Expires: 1968-04-09
Abstract
No abstract record available.
Inventors
- 👤 Nina K Guercken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:30
CPC Classifications
F; F02; F02C; F02C5/00; F02C5/12; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB409498A
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FR409068A
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US978044A
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US1033015A
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US1165023A
Cited
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Cited
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Cited
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Cited
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Cited
FR626976A
Cited
GB308595A
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US2281585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |