Patent US2256969A successfully refreshed from Google Patents.
Patent US2397494A successfully refreshed from Google Patents.
US2397494A
Expired / Lapsed
US
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Measuring device
Assignee: Individual
•
Filing: 1942-11-30
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Granted: 1946-04-02
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Expires: 1962-11-30
Abstract
No abstract record available.
Inventors
- 👤 Fred W Kuppersmith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:36
CPC Classifications
G; G01; G01B; G01B13/00; G01B13/08; G01B13/02; G01B13/06; G01B13/065; Y; Y10; Y10S; Y10S33/00; Y10S33/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-04-01 | 1949-10-01 | 1950-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-04-01 | 1953-10-01 | 1954-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-04-01 | 1957-10-01 | 1958-04-02 | $7700.00 | Window Closed / Lapsed |