Tool for making a through hole
Latest Telefonaktiebolaget L M Ericsson Patents:
Description
FIG. 1 is a perspective view of the tool for making a through hole seen from one side.
FIG. 2 is a perspective view of the tool for making a through hole seen from the other side.
Referenced Cited
U.S. Patent Documents
| 3815694 | June 1974 | Giustino |
| 4228705 | October 21, 1980 | Heisner |
Patent History
Patent number: D274120
Type: Grant
Filed: Oct 14, 1981
Date of Patent: Jun 5, 1984
Assignee: Telefonaktiebolaget L M Ericsson (Stockholm)
Inventors: Bengt E. Legerius (Nykoping), Hans W. Siebert (Oxelosund)
Primary Examiner: A. Hugo Word
Law Firm: Roberts, Spiecens & Cohen
Application Number: 6/311,236
Type: Grant
Filed: Oct 14, 1981
Date of Patent: Jun 5, 1984
Assignee: Telefonaktiebolaget L M Ericsson (Stockholm)
Inventors: Bengt E. Legerius (Nykoping), Hans W. Siebert (Oxelosund)
Primary Examiner: A. Hugo Word
Law Firm: Roberts, Spiecens & Cohen
Application Number: 6/311,236
Classifications
Current U.S. Class:
D 8/14;
D 8/71
