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Inventor

Karlheinz Schmah

Inventor
Adliswil, CH

Overview

1→
Patents
1977
Patent span
Electricity
Primary field (CPC H)

Patents· 1 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Mprimary
H04MTelephonic communication100%
PatentTitleYear
4,001,516'Apparatus for feeding and controlling ringing currents in telecommunication systems'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to SIEMENS AG ALBIS (1)· patent assignee history
1977Based in Adliswil, CH· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SIEMENS AG ALBIS11977
Locations
LocationPatentsSpan
Adliswil, CH11977