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Inventor

Harold R. Henderson

Inventor
Lancaster, OH, US

Overview

5→
Patents
1978–1989
Patent span
Performing operations
Primary field (CPC B)

Patents· 5 as inventor

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

B23Kprimary
B23KSoldering or unsoldering30%
E21BEarth or rock drilling30%
A42BHats10%
A61FFilters implantable into blood vessels10%
LOCD010%
Y10TTechnical subjects covered by former us classification10%
PatentTitleYear
4,864,093'Exothermic cutting electrode'19894,787,142'Exothermic cutting electrode'19884,697,791'Exothermic cutting electrode'1987D0249827'Welding helmet'19784,103,359'Noise suppressing welding helmet'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1989Patents assigned to ARCAIR CO (5)· patent assignee history
1978–1989Based in Lancaster, OH, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ARCAIR CO51978–1989
Locations
LocationPatentsSpan
Lancaster, OH, US51978–1989