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US3491340A Expired / Lapsed US ⏱️ 0.0 years remaining

Digital data communication network monitor system

Assignee: United States Department of the Navy
•
Filing: 1966-10-11
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Granted: 1970-01-20
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Expires: 1986-10-11
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Abstract

No abstract record available.

Inventors

  • 👤 Robert L Richman
  • 👤 Robert P Mcmanus
  • 👤 Lester J Kinkel

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 22:42
CPC Classifications
H; H04; H04L; H04L43/00; H04L43/08; H04L43/0823

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US2493543A Cited
US2905520A Cited
US2957046A Cited
US3309678A Cited
US3303471A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1973-01-19 1973-07-21 1974-01-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1977-01-19 1977-07-21 1978-01-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1981-01-19 1981-07-21 1982-01-20 $7700.00 Window Closed / Lapsed

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