Patent US2539846A successfully refreshed from Google Patents.
US2539846A
Expired / Lapsed
US
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Venom extractor
Assignee: Individual
•
Filing: 1945-01-08
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Granted: 1951-01-30
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Expires: 1965-01-08
Abstract
No abstract record available.
Inventors
- 👤 Howard B Lewis
- 👤 Glen M Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:50
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/08; A61M1/80; A61M1/81; A61M1/64; A61M1/67; A61M1/90; A61M1/98; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US511706A
Cited
GB190304540A
Cited
US940751A
Cited
US1402222A
Cited
US1562900A
Cited
US1864700A
Cited
US2276098A
Cited
US2360051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |