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Acker Drill Co., Inc. Patents |
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Assignee: Acker Drill Co., Inc.
Address: Scranton, PA
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4844184 |
Lock device for hollow stem augers |
July 4, 1989 |
| A locking device or button for hollow stem auger couplings including an outer body section having an internal bore, a locking pin assembly mounted within the bore, and cooperating cam structure for moving the pin assembly a predetermined distance between locked and unlocked positions. Se | |
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