US3411344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonant frequency vibration testing method and apparatus
Assignee: Individual
•
Filing: 1964-11-02
•
Granted: 1968-11-19
•
Expires: 1984-11-02
Abstract
No abstract record available.
Inventors
- 👤 Lloyd Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:36
CPC Classifications
G; G01; G01H; G01H1/00; G01H1/10; G01N; G01N29/00; G01N29/04; G01N29/12; G01N2291/00; G01N2291/26; G01N2291/269; G01N2291/2693
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US445860A
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US1414077A
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US2782632A
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US2903886A
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US3039296A
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US3226975A
Cited
US3237446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |