DT

Donald N. Terwilliger

HB Hardinge Brothers: 4 patents #9 of 47Top 20%
HA Hardinge: 3 patents #3 of 21Top 15%
📍 Millerton, PA: #1 of 4 inventorsTop 25%
🗺 Pennsylvania: #11,794 of 74,527 inventorsTop 20%
Overall (All Time): #757,559 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
6726221 Dead length collet chuck assembly Neal R. Des Ruisseaux, David Myers 2004-04-27
6257595 Collect chuck with quick-change cap Anthony J. Difasi 2001-07-10
5948177 Collet metal treating process John F. Longwell 1999-09-07
5330224 Collet chuck Roger R. Smith 1994-07-19
5096213 Collet assembly Douglas Edward Brackley 1992-03-17
5087059 Tool for installing or removing a collet head 1992-02-11
4858938 Two piece collet with interlocking collet segments Richard C. Knox 1989-08-22