Patent US2020252A successfully refreshed from Google Patents.
US2020252A
Expired / Lapsed
US
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Device for improving the use of vacuum in the bleeding of animals
Assignee: ALLIED LAB
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Filing: 1934-06-30
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Granted: 1935-11-05
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Expires: 1954-06-30
Abstract
No abstract record available.
Inventors
- 👤 William B Utterback
- 👤 James R Nash
- 👤 Thomas W Munce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:16
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/02; A61M1/0204; A61M1/88; A61M2202/00; A61M2202/04; A61M2202/0413; A61M2250/00; Y; Y10; Y10S; Y10S604/00; Y10S604/903
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) | 1938-11-04 | 1939-05-06 | 1939-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-04 | 1943-05-06 | 1943-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-04 | 1947-05-06 | 1947-11-05 | $7700.00 | Window Closed / Lapsed |