US3376730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction measuring apparatus
Assignee: National Aeronautics and Space Administration
•
Filing: 1966-06-29
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Granted: 1968-04-09
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Expires: 1986-06-29
Abstract
No abstract record available.
Inventors
- 👤 James E Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:36
CPC Classifications
G; G01; G01N; G01N19/00; G01N19/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1668593A
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US2397227A
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US2531906A
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US2471423A
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US2718779A
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US2910863A
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US2990713A
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US3178928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |