US2441693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive mechanism
Assignee: Individual
•
Filing: 1942-01-20
•
Granted: 1948-05-18
•
Expires: 1962-01-20
Abstract
No abstract record available.
Inventors
- 👤 Fred S Eastman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:45
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US151335A
Cited
US944497A
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CH21055A
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US687428A
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US922802A
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US1038131A
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US1288129A
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US1249174A
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US1419174A
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US1424027A
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US1441136A
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US1591494A
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US1839343A
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US1892617A
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US1998136A
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US2055766A
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US2178641A
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US2113069A
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US2119061A
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US2129756A
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US2267681A
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US2269389A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-18 | 1951-11-17 | 1952-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-18 | 1955-11-17 | 1956-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-18 | 1959-11-17 | 1960-05-18 | $7700.00 | Window Closed / Lapsed |