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US3453282A
Expired / Lapsed
US
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Novel 4'-aminoethoxy-2,2,4-trialkyl-delta**3-isoflaven compounds
Assignee: Parke Davis and Co LLC
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Filing: 1965-12-27
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Granted: 1969-07-01
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Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Horace Albert De Wald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:06
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3340277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |