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US3018435A
Expired / Lapsed
US
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Measuring
Assignee: National Research Corp
•
Filing: 1958-10-15
•
Granted: 1962-01-23
•
Expires: 1978-10-15
Abstract
No abstract record available.
Inventors
- 👤 George F Vanderschmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:52
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/185; G01L; G01L21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR852257A
Cited
US2531144A
Cited
US2634609A
Cited
US2728861A
Cited
US2876360A
Cited
US2874305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |