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US2495613A
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Method of and apparatus for cracking tarry materials
Assignee: Individual
•
Filing: 1946-05-21
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Granted: 1950-01-24
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Expires: 1966-05-21
Abstract
No abstract record available.
Inventors
- 👤 Malcolm H Tuttle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:38
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1688859A
Cited
US1714198A
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US1906863A
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US1999437A
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US2336639A
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US2364492A
Cited
US2412096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |