US2416077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well torpedo
Assignee: BRADFORD DISTR PENNSYLVANIA OI
•
Filing: 1943-08-13
•
Granted: 1947-02-18
•
Expires: 1963-08-13
Abstract
No abstract record available.
Inventors
- 👤 Samuel T Yuster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:44
CPC Classifications
F; F42; F42B; F42B3/00; E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US119330A
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US146612A
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US314585A
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US470705A
Cited
GB191509563A
Cited
GB125464A
Cited
US1444571A
Cited
US1775271A
Cited
US2023831A
Cited
US2311721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |