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Inventor

David J. Crawford

Inventor
Poughkeepsie, NY, US

Overview

2→
Patents
1982–1983
Patent span
Electricity
Primary field (CPC H)

Patents· 2 as inventor

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

G03Fprimary
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices25%
H01JElectric discharge tubes or discharge lamps25%
H01RElectrically-conductive connections25%
Y10TTechnical subjects covered by former us classification25%
PatentTitleYear
4,413,399'Apparatus and method for precisely positioning an object'19834,357,540'Semiconductor device array mask inspection method and apparatus'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1983Patents assigned to IBM (2)· patent assignee history
1982–1983Based in Poughkeepsie, NY, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
IBM21982–1983
Locations
LocationPatentsSpan
Poughkeepsie, New York, US21982–1983