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US2197347A
Expired / Lapsed
US
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Gasifying apparatus
Assignee: EASTERN OIL REFINING Co I
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Filing: 1938-06-09
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Granted: 1940-04-16
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Expires: 1958-06-09
Abstract
No abstract record available.
Inventors
- 👤 Reichhelm Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:31
CPC Classifications
F; F23; F23C; F23C99/00; C; C10; C10G; C10G9/00; C10G9/34; C10G9/36; C10G9/38; F23K; F23K5/00; F23K5/02; F23K5/14; F23K5/22; F23C2700/00; F23C2700/02; F23C2700/026
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) | 1943-04-16 | 1943-10-16 | 1944-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-16 | 1947-10-16 | 1948-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-16 | 1951-10-16 | 1952-04-16 | $7700.00 | Window Closed / Lapsed |