US1926563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for cracking hydrocarbons in alpha metal bath
Assignee: PREUSSICHE GEWERKSHAFT RAPHAEL
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Filing: 1928-09-25
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Granted: 1933-09-12
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Expires: 1948-09-25
Abstract
No abstract record available.
Inventors
- 👤 Seifer Theodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:34
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/40
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) | 1936-09-11 | 1937-03-13 | 1937-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-09-11 | 1941-03-13 | 1941-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-09-11 | 1945-03-13 | 1945-09-12 | $7700.00 | Window Closed / Lapsed |