Richtungsempfindliche Hörhilfe

Swiss patent · CH563097 · Deleted

Register entry

Publication number
CH563097
Application number
CH010713/1973
Kind
Swiss patent
Status
Deleted
Specification
Granted
Filed
Jul 20, 1973
Published
Apr 30, 1975
Granted
Apr 30, 1975
Deleted
Jul 31, 1991
Reason
Annual fee unpaid
IPC classes
H04R 25/02 (2006.01)
Priority
US A273943 21.07.1972
Filing language
German
Source
Swissreg

History

What the Federal Institute of Intellectual Property published about this title, newest first.

  1. Oct 29, 2024

    Deleted, fee unpaid

    Published in Swissreg on 29.10.2024

  2. Apr 30, 1975

    Granted

    Published in PIDTJ No 8 in 1975

Parties

Holder

Knowles Electronics, Inc.

1151 Maplewood Drive, Itasca/IL, US

Agent

Hepp Ryffel AG

Bahnhofstrasse 58, 8001 Zürich

Inventor

Knowles, Hugh Shaler

Elgin/IL, US

Carlson, Elmer Victor

Prospect Heights/IL, US

The register names each party by name and address. A holder or agent is linked to an organization where exactly one entity of the commercial register bears its name; the street of a party not so recognised is not shown here.