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Patent US2486598A successfully refreshed from Google Patents.
US2486598A
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Apparatus for low temperature gas compression
Assignee: WITTEMANN Co Inc
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Filing: 1947-12-13
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Granted: 1949-11-01
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Expires: 1967-12-13
Abstract
No abstract record available.
Inventors
- 👤 Grant E Hockens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:32
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/06; F04B25/00; F04B25/02; F04B39/0005; F04B39/04; F04B49/00; F04B49/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US144390A
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US1478162A
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US1443135A
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US1519932A
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US1949812A
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US1974791A
Cited
US2160187A
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US2362984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |