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Inventor

John Rumsey

Inventor
Oxnard, CA, US

Overview

2→
Patents
1987–1991
Patent span
Performing operations
Primary field (CPC B)

Patents· 2 as inventor

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

B41Jprimary
B41JTypewriters50%
G03GElectrography50%
PatentTitleYear
4,990,942'Printer RF line control'19914,692,017'Toner transfer apparatus'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1991Patents assigned to DELPHAX SYSTEMS (2)· patent assignee history
1987Based in Charlestown, MA, US· patent location history
1991Based in Oxnard, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DELPHAX SYSTEMS21987–1991
Locations
LocationPatentsSpan
Oxnard, California, US11991
Charlestown, Massachusetts, US11987