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US3419111A Expired / Lapsed US ⏱️ 0.0 years remaining

Plural load viscoelastic damping device

Assignee: United States Department of the Air Force
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Filing: 1966-10-24
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Granted: 1968-12-31
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Expires: 1986-10-24
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Abstract

No abstract record available.

Inventors

  • 👤 David I G Jones
  • 👤 John P Henderson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 14:59
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/10; F16F7/104; F16F7/108

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US1638782A Cited
US1657390A Cited
US2857974A Cited
US3334886A Cited
US3078971A Cited
US3262521A Cited
US3321569A Cited
US3314502A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1971-12-31 1972-07-01 1972-12-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1975-12-31 1976-07-01 1976-12-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1979-12-31 1980-07-01 1980-12-31 $7700.00 Window Closed / Lapsed

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