Protective cover for a hybrid circuit switching device

The ornamental design for a protective cover for a hybrid circuit switching device, as shown and described.

FIG. 1 is a perspective view of a protective cover for a hybrid circuit switching device, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevational view thereof; and

FIG. 5 is a right side elevational view thereof.

Patent	Priority	Assignee	Title
D311383,	Apr 14 1987	Aktiebolaget Volvo	Protective cover for marine instruments on a control console
D559204,	Feb 17 2006	UNIVERSAL ATLANTIC SYSTEMS, LLC	Wall-mounted switch guard
ER409,

Patent	Priority	Assignee	Title
3778577,
4225748,	Jun 02 1977		Switching device, especially for electronic contactless switches, e.g. proximity switches
136295,
138405,
199026,

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
May 24 1982	GTE Automatic Electric Laboratories Incorporated	GTE AUTOMATIC ELECTRIC INCORPORATED, A CORP OF DE	ASSIGNMENT OF ASSIGNORS INTEREST	004081	0217	pdf
May 25 1982	KOPPENSTEINER, JAMES V	GTE Automatic Electric Incorporated	ASSIGNMENT OF ASSIGNORS INTEREST	004017	0551	pdf
May 25 1982	LEN, GEORGE	GTE Automatic Electric Incorporated	ASSIGNMENT OF ASSIGNORS INTEREST	004017	0551	pdf
Jun 01 1982		GTE Automatic Electric Incorporated	(assignment on the face of the patent)
Dec 28 1988	GTE Communication Systems Corporation	AG COMMUNICATION SYSTEMS CORPORATION, 2500 W UTOPIA RD , PHOENIX, AZ 85027, A DE CORP	ASSIGNMENT OF ASSIGNORS INTEREST	005060	0501	pdf

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