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Inventor

Frank Lewandowski

Inventor
Minnetonka, MN, US

Overview

3→
Patents
1989–1999
Patent span
Physics
Primary field (CPC G)

Patents· 3 as inventor

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

G06Qprimary
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes67%
G07FCoin-freed or like apparatus33%
PatentTitleYear
5,987,425'Variable margin pricing system'19995,822,736'Variable margin pricing system'19984,865,178'Single copy vending machine for newspapers and the like'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to LEW ENTERPRISES INC (1)· patent assignee history
1989Based in Chicago, IL, US· patent location history
1998–1999Patents assigned to UNITED HARDWARE DISTRIBUTING C (2)· patent assignee history
1998–1999Based in Minnetonka, MN, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
UNITED HARDWARE DISTRIBUTING C21998–1999
LEW ENTERPRISES INC11989
Locations
LocationPatentsSpan
Minnetonka, Minnesota, US21998–1999
Chicago, Illinois, US11989