US1723932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for carbonizing coal and the like
Assignee: OLD BEN COAL Corp
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Filing: 1925-10-24
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Granted: 1929-08-06
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Expires: 1945-10-24
Abstract
No abstract record available.
Inventors
- 👤 Frank C Greene
- 👤 Irving F Laucks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:21
CPC Classifications
C; C10; C10B; C10B7/00; C10B7/10
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) | 1932-08-05 | 1933-02-04 | 1933-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-08-05 | 1937-02-04 | 1937-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-08-05 | 1941-02-04 | 1941-08-06 | $7700.00 | Window Closed / Lapsed |