LexDanaLexDanabeta
Inventor

H. Erwin Grellman

Inventor
Beaverton, OR, US

Overview

3→
Patents
1986–1996
Patent span
Performing operations
Primary field (CPC B)

Patents· 3 as inventor

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

B41Jprimary
B41JTypewriters40%
H01PWaveguides20%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1020%
Y10TTechnical subjects covered by former us classification20%
PatentTitleYear
5,491,504'Thermal transfer printer ink ribbon-changing carousel apparatus and method'19965,362,043'Rotating clamp assembly'19944,600,907'Coplanar microstrap waveguide interconnector and method of interconnection'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1996Patents assigned to TEKTRONIX INC (3)· patent assignee history
1986–1996Based in Beaverton, OR, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TEKTRONIX INC31986–1996
Locations
LocationPatentsSpan
Beaverton, OR, US31986–1996