US2431060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum product cracking apparatus
Assignee: Individual
•
Filing: 1944-11-27
•
Granted: 1947-11-18
•
Expires: 1964-11-27
Abstract
No abstract record available.
Inventors
- 👤 Frank E Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:52
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US414601A
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US1319569A
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US1324766A
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US1412540A
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US1212620A
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US1329739A
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US1391569A
Cited
US1635519A
Cited
US1993017A
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US1971748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |