Inventor

Angela L. Lenden

Inventor

Coraopolis, PA, US

Overview

1977

Patent span

Fixed constructions

Primary field (CPC E)

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

E21Bprimary

E21BEarth or rock drilling50%

E21DShafts50%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to UNIV CARNEGIE MELLON (1)· patent assignee history

1977Based in Coraopolis, PA, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
UNIV CARNEGIE MELLON	1	1977

Locations

Location	Patents	Span
Coraopolis, Pennsylvania, US	1	1977