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Inventor

Edmund M. Butterworth

Inventor
Bedford, GB

Overview

6→
Patents
1977–1988
Patent span
Electricity
Primary field (CPC H)

Patents· 6 as inventor

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

H01Hprimary
H01HElectric switches83%
G05GControl devices or systems insofar as characterised by mechanical features only17%
PatentTitleYear
4,766,273'High current double-break electrical contactor'19884,544,814'Mechanical interlock for contactors'19854,544,810'Interlocking pushbutton selector switch'19854,273,972'Joystick control electric switch'19814,182,943'Push button device'19804,032,735'Contact unit'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to CUTLER HAMMER INC (1)· patent assignee history
1977–1988Based in Bedford, GB· patent location history
1980–1988Patents assigned to EATON CORP (5)· patent assignee history
1985Based in Brown Deer, WI, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
EATON CORP51980–1988
CUTLER HAMMER INC11977
Locations
LocationPatentsSpan
Bedford, GB41977–1988
Brown Deer, WI, US21985