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Inventor

Kenneth Carl Altrichter

Inventor
Little Falls, MN, US

Overview

2→
Patents
2011–2013
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 2 as inventor

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

E21Bprimary
E21BEarth or rock drilling50%
Y10TTechnical subjects covered by former us classification50%
PatentTitleYear
8,356,677'Methods of preloading a sonic drill head and methods of drilling using the same'20138,006,782'Sonic drill head'2011

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2011–2013Patents assigned to LONGYEAR TM INC (2)· patent assignee history
2011–2013Based in Little Falls, MN, US· patent location history
2013Patents assigned to ABLE ROBERT EUGENE (1)· patent assignee history
2013Patents assigned to ALTRICHTER KENNETH CARL (1)· patent assignee history
2013Patents assigned to DRIVDAHL KRISTIAN S (1)· patent assignee history
2013Patents assigned to NEVENNER TODD A (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
LONGYEAR TM INC22011–2013
ABLE ROBERT EUGENE12013
ALTRICHTER KENNETH CARLself12013
DRIVDAHL KRISTIAN S12013
NEVENNER TODD A12013
Locations
LocationPatentsSpan
Little Falls, Minnesota, US22011–2013