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Inventor

Stephen E. Kerman

Inventor
Merrick, NY, US

Overview

4→
Patents
1978–1985
Patent span
Electricity
Primary field (CPC H)

Patents· 4 as inventor

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

H04Mprimary
H04MTelephonic communication57%
H04LTransmission of digital information, e.g. telegraphic communication14%
H04QSelecting14%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
PatentTitleYear
4,524,244'Digital and voice telecommunication apparatus'19854,185,173'Key telephone call signalling circuit'19804,087,649'Pulse counting circuit'19784,081,624'Key telephone intercom line system'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1980Patents assigned to NITSUKO LTD (3)· patent assignee history
1978–1980Based in Merrick, NY, US· patent location history
1980Patents assigned to TIE COMMUNICATIONS (1)· patent assignee history
1985Patents assigned to CYGNET TECHNOLOGIES INC (1)· patent assignee history
1985Based in Southbury, CT, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NITSUKO LTD31978–1980
CYGNET TECHNOLOGIES INC11985
TIE COMMUNICATIONS11980
Locations
LocationPatentsSpan
Merrick, New York, US31978–1980
Southbury, CT, US11985