US2419508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for catalytic conversion
Assignee: ExxonMobil Oil Corp
•
Filing: 1941-10-01
•
Granted: 1947-04-22
•
Expires: 1961-10-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas P Simpson
- 👤 John W Payne
- 👤 Jr John A Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:29
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB254011A
Cited
US1882000A
Cited
GB255159A
Cited
US1836301A
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DE533037C
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US1940651A
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GB383616A
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US2023205A
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GB364665A
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US2183301A
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US2217703A
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US2209040A
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US2239801A
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US2264438A
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US2236083A
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US2246654A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-21 | 1950-10-21 | 1951-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-21 | 1954-10-21 | 1955-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-21 | 1958-10-21 | 1959-04-22 | $7700.00 | Window Closed / Lapsed |