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Inventor

Lawrence A. Dunham

Inventor
Northridge, CA, US

Overview

5→
Patents
1980–1993
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 5 as inventor

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

F16Kprimary
F16KValves25%
H01HElectric switches25%
Y10TTechnical subjects covered by former us classification25%
A62CFire-fighting13%
F16JPistons13%
PatentTitleYear
5,233,142'Snap action electrical switching mechanism with dual set points'19935,092,610'High pressure piston seal'19925,006,678'Pressure switch with deadband adjustment'19914,887,631'Fire isolation device'19894,225,760'Pressure actuated unit with high temperature protection'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1993Patents assigned to ITT (5)· patent assignee history
1980Based in Chatsworth, CA, US· patent location history
1989–1993Based in Northridge, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ITT51980–1993
Locations
LocationPatentsSpan
Northridge, California, US41989–1993
Chatsworth, California, US11980