US2867661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-hygroscopic antibiotic salt
Assignee: Pfizer Inc
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Filing: 1955-12-08
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Granted: 1959-01-06
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Expires: 1975-12-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Jay S Buckley
- 👤 Jr Charles R Stephens
- 👤 Jr Richard L Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:24
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |