LexDanaLexDanabeta
Inventor

John O. Hazen

Inventor
Monaca, PA, US

Overview

4→
Patents
1980–1987
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 4 as inventor

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

H02Gprimary
H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines50%
E04FFinishing work on buildings, e.g. stairs, floors33%
E04BGeneral building constructions17%
PatentTitleYear
4,656,798'Closure member for an electrical activating assembly'19874,656,795'Floor panel for elevated floor assembly'19874,289,921'Electrical activating assembly and closure member therefor'19814,232,493'Fire-resistant electrical wiring distributing floor structure and method'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1987Patents assigned to ROBERTSON CO H H (4)· patent assignee history
1980–1987Based in Monaca, PA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ROBERTSON CO H H41980–1987
Locations
LocationPatentsSpan
Monaca, Pennsylvania, US41980–1987