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Inventor

Robert H. Johanson

Inventor
Danville, KY, US

Overview

3→
Patents
1987–1988
Patent span
Human necessities
Primary field (CPC A)

Patents· 3 as inventor

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

A47Lprimary
A47LDomestic washing or cleaning50%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables25%
Y10TTechnical subjects covered by former us classification25%
PatentTitleYear
4,756,418'Anti-clockspringing apparatus and method'19884,715,086'Vacuum cleaner and method of dissipating electrostatic charge through corona discharge'19874,715,085'Vacuum cleaner and method of dissipating electrostatic charge'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987Patents assigned to WHIRLPOOL CO (2)· patent assignee history
1987Based in Danville, KY, US· patent location history
1988Patents assigned to EASTMAN KODAK CO (1)· patent assignee history
1988Based in Rochester, NY, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
WHIRLPOOL CO21987
EASTMAN KODAK CO11988
Locations
LocationPatentsSpan
Danville, KY, US21987
Rochester, New York, US11988