LexDanaLexDanabeta
Inventor

William MacPherson

Inventor
West Chicago, IL, US

Overview

2→
Patents
1989–1996
Patent span
Physics
Primary field (CPC G)

Patents· 2 as inventor

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

G08Bprimary
G08BSignalling systems, e.g. personal calling systems100%
PatentTitleYear
5,485,144'Compensated ionization sensor'19964,829,283'Supervision arrangement for smoke detectors'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1996Patents assigned to PITTWAY CORP (2)· patent assignee history
1989–1996Based in West Chicago, IL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
PITTWAY CORP21989–1996
Locations
LocationPatentsSpan
West Chicago, Illinois, US21989–1996