Patent US1951461A successfully refreshed from Google Patents.
US2648981A
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Assignee: Individual
•
Filing: 1951-07-19
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Granted: 1953-08-18
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Expires: 1971-07-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Willard M Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:15
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/52; A; A61; A61B; A61B5/00; A61B5/20; A61B5/207; A61B5/208; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US95107A
Cited
US669347A
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US898701A
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US1049718A
Cited
US1015556A
Cited
US1080052A
Cited
FR797070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |