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Inventor

Robert Madland

Inventor
Mount Prospect, IL, US

Overview

5→
Patents
1977–1994
Patent span
Electricity
Primary field (CPC H)

Patents· 5 as inventor

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

H01Hprimary
H01HElectric switches29%
H01JElectric discharge tubes or discharge lamps29%
H03KPulse technique29%
B41JTypewriters14%
PatentTitleYear
5,293,147'Automotive high current fuse'19945,229,739'Automotive high current fuse'19934,099,176'Magnetic key switch having a removable support assembly'19784,071,719'Keyboard switch assembly having actuator interlocking keyboard shift and shift lock and release mechanism'19784,028,696'Double depression magnetic keyswitch'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1978Patents assigned to ILLINOIS TOOL WORKS (3)· patent assignee history
1977–1978Based in Mount Prospect, IL, US· patent location history
1993–1994Patents assigned to LITTELFUSE INC (2)· patent assignee history
1993–1994Based in Schaumburg, IL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ILLINOIS TOOL WORKS31977–1978
LITTELFUSE INC21993–1994
Locations
LocationPatentsSpan
Mount Prospect, Illinois, US31977–1978
Schaumburg, Illinois, US21993–1994