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Inventor

Martha K. Hardwick

Inventor
Tustin, CA, US

Overview

3→
Patents
1981–1987
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.

A63Fprimary
A63FCard, board, or roulette games50%
A61BDiagnosis25%
Y10TTechnical subjects covered by former us classification25%
PatentTitleYear
4,648,868'Apparatus for controlling flow and pressure measurement'19874,355,806'Electronic jacks game'19824,296,926'Red light - green light game'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1982Patents assigned to MATTEL INC (2)· patent assignee history
1981Based in Redondo Beach, CA, US· patent location history
1982Based in Costa Mesa, CA, US· patent location history
1987Patents assigned to AMERICAN HOSPITAL SUPPLY CORP (1)· patent assignee history
1987Based in Tustin, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MATTEL INC21981–1982
AMERICAN HOSPITAL SUPPLY CORP11987
Locations
LocationPatentsSpan
Tustin, California, US11987
Costa Mesa, California, US11982
Redondo Beach, California, US11981