Nova Patents
JPS507780B1

Circuit arrangement for automatic control of the voltage of an electrical filter

Abstract

This record has no abstract on file.

Term

Term ended

Expired 9 March 1990, 36.5 years ago.

  1. Priority
  2. Filed
  3. Granted
  4. Expired
  5. Today

9 members in 8 offices

This recordMember, by publication datePriority claim

Priority claims1

Priority claims
DocumentOfficeKindDate
1911923GermanyA

Members9

Family members, oldest first
DocumentOfficeKind
DE1911923A1GermanyA1
FR2037712A5FranceA5
US3602805AUnited States of AmericaA
AU1227170AAustraliaA
AT295672BAustriaB
GB1272191AUnited KingdomA
DE1911923B2GermanyB2
SE354976BSwedenB
JPS507780B1This recordJapanB1