US2550677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for dry distillation
Assignee: Individual
•
Filing: 1946-06-24
•
Granted: 1951-05-01
•
Expires: 1966-06-24
Abstract
No abstract record available.
Inventors
- 👤 Dalin David
- 👤 Hedback Tore Johannes
- 👤 Gejrot Claes Joel
- 👤 Johansson Arvid Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:31
CPC Classifications
C; C10; C10B; C10B1/00; C10B1/02; C10B1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1176432A
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DE354588C
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US1618566A
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GB228897A
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GB240497A
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US1838622A
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CH116963A
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US1922321A
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US1780653A
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GB419370A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |