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Inventor

Harold T. Keller

Inventor
Pittsburgh, PA, US

Overview

4→
Patents
1986–1988
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

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

B21Dprimary
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material20%
B23KSoldering or unsoldering20%
C21DModifying the physical structure of ferrous metals20%
Y10TTechnical subjects covered by former us classification20%
G21CNuclear reactors10%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution10%
PatentTitleYear
4,762,674'Brazing sleeve having ceramic flux band and method for applying same'19884,649,493'Tube expansion apparatus'19874,649,492'Tube expansion process'19874,624,866'Brazing sleeve having ceramic flux band and method for applying same'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1988Patents assigned to WESTINGHOUSE ELECTRIC CORP (4)· patent assignee history
1986–1988Based in Pittsburgh, PA, US· patent location history
1987Based in Plum Borough, PA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
WESTINGHOUSE ELECTRIC CORP41986–1988
Locations
LocationPatentsSpan
Pittsburgh, Pennsylvania, US21986–1988
Plum Borough, Pennsylvania, US21987