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Inventor

David E. Brann

Inventor
Lemont, IL, US

Overview

2→
Patents
1985–1987
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 2 as inventor

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

C21Dprimary
C21DModifying the physical structure of ferrous metals17%
F01PCooling of machines or engines in general17%
F02BInternal-combustion piston engines17%
F02FCylinders, pistons or casings, for combustion engines17%
F16JPistons17%
Y02TClimate change mitigation technologies related to transportation17%
PatentTitleYear
4,643,079'Iron piston having selectively hardened ring groove'19874,502,422'High output oil cooled floating piston'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1987Patents assigned to GEN MOTORS CORP (2)· patent assignee history
1985–1987Based in Lemont, IL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GEN MOTORS CORP21985–1987
Locations
LocationPatentsSpan
Lemont, Illinois, US21985–1987