US2439532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anthelmintic compositions
Assignee: Armour and Co
•
Filing: 1943-12-23
•
Granted: 1948-04-13
•
Expires: 1963-12-23
Abstract
No abstract record available.
Inventors
- 👤 John A Whiting
- 👤 Jr David V Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:38
CPC Classifications
A; A61; A61K; A61K33/00; A61K33/24; A61K33/34; A61K36/00; A61K36/18; A61K36/88; A61K36/899
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2146867A
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US2294888A
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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) | 1951-04-13 | 1951-10-13 | 1952-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-13 | 1955-10-13 | 1956-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-13 | 1959-10-13 | 1960-04-13 | $7700.00 | Window Closed / Lapsed |