Mounting ring for prefabricated fire wall lead-in
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Description
FIG. 1 is a side perspective view of a mounting ring for prefabricated fire wall lead-in showing our new design;
FIG. 2 is an opposite side perspective view thereof; and
FIG. 3 is an elevational view thereof as seen from the bottom of FIG. 1;
FIG. 4 is an elevational view thereof on an enlarged scale as seen from the top of FIG. 1.
Referenced Cited
Patent History
Patent number: D274904
Type: Grant
Filed: Sep 5, 1980
Date of Patent: Jul 31, 1984
Assignee: Telefonaktiebolaget L M Ericsson (Stockholm)
Inventors: Bengt E. Legerius (Nykoping), Hans W. Siebert (Oxelosund)
Primary Examiner: Susan J. Lucas
Law Firm: Roberts, Spiecens & Cohen
Application Number: 6/184,228
Type: Grant
Filed: Sep 5, 1980
Date of Patent: Jul 31, 1984
Assignee: Telefonaktiebolaget L M Ericsson (Stockholm)
Inventors: Bengt E. Legerius (Nykoping), Hans W. Siebert (Oxelosund)
Primary Examiner: Susan J. Lucas
Law Firm: Roberts, Spiecens & Cohen
Application Number: 6/184,228
Classifications
Current U.S. Class:
D13/13