Inventor
Donald N. Terwilliger
Inventor
Elmira, NY, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Tprimary
Y10TTechnical subjects covered by former us classification38%
B23BTurning31%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding6%
C21DModifying the physical structure of ferrous metals6%
C23CCoating metallic material6%
PatentTitleYear
6,726,221'Dead length collet chuck assembly'20046,257,595'Collect chuck with quick-change cap'20015,948,177'Collet metal treating process'19995,330,224'Collet chuck'19945,096,213'Collet assembly'19925,087,059'Tool for installing or removing a collet head'19924,858,938'Two piece collet with interlocking collet segments'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1994Patents assigned to HARDINGE BROTHERS INC (4)· patent assignee history
1989–1992Based in Millerton, PA, US· patent location history
1994–2004Based in Elmira, NY, US· patent location history
1999–2004Patents assigned to HARDINGE INC (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HARDINGE BROTHERS INC | 4 | 1989–1994 |
| HARDINGE INC | 3 | 1999–2004 |
Locations
| Location | Patents | Span |
|---|---|---|
| Elmira, New York, US | 4 | 1994–2004 |
| Millerton, Pennsylvania, US | 3 | 1989–1992 |