US2537670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coking retort
Assignee: Reilly Tar and Chemical Corp
•
Filing: 1947-06-26
•
Granted: 1951-01-09
•
Expires: 1967-06-26
Abstract
No abstract record available.
Inventors
- 👤 Harold R Horner
- 👤 Richard J Hennessy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:44
CPC Classifications
C; C10; C10B; C10B1/00; C10B1/02; C10B1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US157645A
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US561922A
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US976930A
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GB191008399A
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US1591729A
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US1636975A
Cited
US1731165A
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GB414972A
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US2037556A
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GB434403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |