US2420765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic balancer
Assignee: Individual
•
Filing: 1944-03-25
•
Granted: 1947-05-20
•
Expires: 1964-03-25
Abstract
No abstract record available.
Inventors
- 👤 Robert B Annis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:17
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/14; G01M1/16; G01M1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1876524A
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US2122621A
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US2165024A
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US2131602A
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US2167488A
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US2130122A
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US2293371A
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US2289074A
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US2243458A
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US2329654A
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US2289200A
Cited
US2329835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-19 | 1950-11-18 | 1951-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-19 | 1954-11-18 | 1955-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-19 | 1958-11-18 | 1959-05-20 | $7700.00 | Window Closed / Lapsed |