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Inventor

David Stryffeler

Inventor
Franklin, PA, US

Overview

3→
Patents
2015–2019
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 3 as inventor

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

E21Cprimary
E21CMining or quarrying33%
E21BEarth or rock drilling22%
G06FElectric digital data processing22%
G07CTime or attendance registers22%
PatentTitleYear
10,227,869System and method of detecting dull and worn cutter bits20199,920,624'System and method of detecting dull and worn cutter bits'20188,967,728'Method of controlling a miner to cause wobble in the cutting heads'2015

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2015–2019Patents assigned to JOY MM DELAWARE INC (3)· patent assignee history
2015Patents assigned to MCCORMICK CHRIS (1)· patent assignee history
2015Patents assigned to MCDANIEL DON (1)· patent assignee history
2015Patents assigned to STRYFFELER DAVID (1)· patent assignee history
2015–2019Based in Franklin, PA, US· patent location history
2018Based in Frankln, PA, US· patent location history
2019Patents assigned to JOY GLOBAL UNDERGROUND MINING LLC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JOY MM DELAWARE INC32015–2019
JOY GLOBAL UNDERGROUND MINING LLC12019
MCCORMICK CHRIS12015
MCDANIEL DON12015
STRYFFELER DAVIDself12015
Locations
LocationPatentsSpan
Franklin, Pennsylvania, US22015–2019
Frankln, Pennsylvania, US12018