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US2199815A
Expired / Lapsed
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Apparatus for the treatment of biologically active products
Assignee: University of Pennsylvania
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Filing: 1935-12-12
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Granted: 1940-05-07
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Expires: 1955-12-12
Abstract
No abstract record available.
Inventors
- 👤 Earl W Flosdorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:39
CPC Classifications
F; F26; F26B; F26B5/00; F26B5/04; F26B5/06
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) | 1943-05-07 | 1943-11-06 | 1944-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-07 | 1947-11-06 | 1948-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-07 | 1951-11-06 | 1952-05-07 | $7700.00 | Window Closed / Lapsed |