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US2016480A
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US
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Perhydrocarbazyl compounds of the pyridine and quinoline series
Assignee: Winthrop Chemical Co Inc
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Filing: 1933-07-14
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Granted: 1935-10-08
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Expires: 1953-07-14
Abstract
No abstract record available.
Inventors
- 👤 Bockmuhl Max
- 👤 Krohs Walter
- 👤 Ehrhart Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:18
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/06; C07D209/00; C07D209/56; C07D209/80; C07D209/82; C07D209/86; C07D219/00; C07D219/14
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) | 1938-10-07 | 1939-04-08 | 1939-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-07 | 1943-04-08 | 1943-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-07 | 1947-04-08 | 1947-10-08 | $7700.00 | Window Closed / Lapsed |