Patent US2070209A successfully refreshed from Google Patents.
US2070209A
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US
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Method of storing and burning combustible mixtures
Assignee: Phillips Petroleum Co
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Filing: 1933-11-13
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Granted: 1937-02-09
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Expires: 1953-11-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur N Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:23
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; F; F23; F23D; F23D11/00; F23D11/36; F23D11/42; F23D11/44; F23D11/441; F23D11/443; F23K; F23K5/00
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) | 1940-02-09 | 1940-08-10 | 1941-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-02-09 | 1944-08-10 | 1945-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-02-09 | 1948-08-10 | 1949-02-09 | $7700.00 | Window Closed / Lapsed |