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US3495052A Expired / Lapsed US ⏱️ 0.0 years remaining

Matrix switch

Assignee: Comtech Corp
•
Filing: 1968-12-23
•
Granted: 1970-02-10
•
Expires: 1988-12-23
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Abstract

No abstract record available.

Inventors

  • 👤 Heinrich F Tauscher

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 23:22
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H1/00; H01H1/12; H01H1/36; H01H1/40; H01H1/403; H01H19/00; H01H19/001

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

USRE24586E Cited
US3146320A Cited
US3193630A Cited
US3366751A Cited
US3308250A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1973-02-09 1973-08-11 1974-02-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1977-02-09 1977-08-11 1978-02-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1981-02-09 1981-08-11 1982-02-10 $7700.00 Window Closed / Lapsed

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