Telephone circuit connecting device

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Information

Patent Grant
D315566

References
Source

Patent Number
D315,566
Date Filed
Friday, January 15, 1988
37 years ago
Date Issued
Tuesday, March 19, 1991
33 years ago

Inventors
- Paul V. De Luca
- Helmuth Neuwirth
Original Assignees
- PORTA SYSTEMS CORP
Examiners
- Fay, Jr.; Horace B.
Agents
- Temko; Charles E.

US Classifications
- D14 - Recording, communication, or information retrieval equipment
Field of Search
- US
- D14 256
- D14 240
- 379 325
- 379 332
- 379 330
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a telephone circuit connecting device, as shown.

US Referenced Citations (17)

Number	Name	Date	Kind
D241034	De Luca	Aug 1976
D246581	De Luca	Dec 1977
D249789	De Luca	Oct 1978
D271100	Hollfelder	Oct 1983
D271295	De Luca et al.	Nov 1983
D271965	Hollfelder	Dec 1983
D273289	Hollfelder	Apr 1984
D273290	Hollfelder	Apr 1984
D276426	De Luca et al.	Nov 1984
D276605	Neuwirth	Dec 1984
D276606	Neuwirth	Dec 1984
D285433	De Luca et al.	Sep 1986
D297232	Gazzo	Aug 1988
D297531	De Luca	Sep 1988
1371874	Ditch et al.	Mar 1921
4012096	De Luca et al.	Mar 1977
4658418	Rodgers	Apr 1987