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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.
Koppensteiner, James V., Len, George
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 |
Patent | Priority | Assignee | Title |
3778577, | |||
4225748, | Jun 02 1977 | Switching device, especially for electronic contactless switches, e.g. proximity switches | |
136295, | |||
138405, | |||
199026, |
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 | |
May 25 1982 | KOPPENSTEINER, JAMES V | GTE Automatic Electric Incorporated | ASSIGNMENT OF ASSIGNORS INTEREST | 004017 | /0551 | |
May 25 1982 | LEN, GEORGE | GTE Automatic Electric Incorporated | ASSIGNMENT OF ASSIGNORS INTEREST | 004017 | /0551 | |
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 |
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