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Inventor

Donald E. Sprothbery

Inventor
Orange, CA, US

Overview

1→
Patents
1989
Patent span
Physics
Primary field (CPC G)

Patents· 1 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus50%
H04NPictorial communication, e.g. television50%
PatentTitleYear
4,836,649'Optical layout for a three light valve full-color projector employing a dual relay lens system and a single projection lens'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to HUGHES AIRCRAFT CO (1)· patent assignee history
1989Based in Orange, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HUGHES AIRCRAFT CO11989
Locations
LocationPatentsSpan
Orange, California, US11989