Patent US2645020A successfully refreshed from Google Patents.
US2645020A
Expired / Lapsed
US
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Accurately repeating dial type comparator
Assignee: Individual
•
Filing: 1950-01-07
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Granted: 1953-07-14
•
Expires: 1970-01-07
Abstract
No abstract record available.
Inventors
- 👤 Shubel A Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:26
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2419433A
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US1664583A
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US1892969A
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US2139251A
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US2267559A
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US2445875A
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US2424497A
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CH260609A
Cited
US2556761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |