US1607241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for distilling oil shales and the like
Assignee: S E Co
•
Filing: 1922-09-20
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Granted: 1926-11-16
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Expires: 1942-09-20
Abstract
No abstract record available.
Inventors
- 👤 David J L Davis
- 👤 George W Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:11
CPC Classifications
C; C10; C10B; C10B49/00; C10B49/02; C10B49/04; C10B49/06
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) | 1929-11-15 | 1930-05-17 | 1930-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-11-15 | 1934-05-17 | 1934-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-11-15 | 1938-05-17 | 1938-11-16 | $7700.00 | Window Closed / Lapsed |