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Patent
   D330196
Priority
Aug 08 1989
Filed
Jan 24 1990
Issued
Oct 13 1992
Expiry
Oct 13 2006
Inventors
Hitzler, J…
Assg.orig
Siemens Ak…
Assg.curr
TEKTRONIX …
Entity
unknown
Referenced by
2
References
6
Maint.:
n/a
The ornamental design for portable protocol testing computer, as shown and described.

FIG. 1 is a top front and right side perspective view of a portable protocol testing computer showing my new design with the front cover opened;

FIG. 2 is a top rear left side perspective view thereof; and,

FIG. 3 is a top front right side perspective view thereof with the front cover closed.
INVENTORS:

Hitzler, Jurgen

THIS PATENT IS REFERENCED BY THESE PATENTS:
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THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
4525802, May 14 1982 CACHE TECHNOLOGY CORPORATION, A CORP OF CA Portable electronic testing apparatus
D255116, Mar 03 1978 AEG SCHNEIDER AUTOMATION, INC Portable programmer for programmable controller
D293109, Mar 08 1985 Diversified Technology Partners, Ltd.-1982 Protocol analyzer
D293793, May 07 1985 SANYO ELECTRIC CO , LTD Computer
D310662, Sep 26 1986 Zellweger Uster Ltd. Terminal for signal processing in textile laboratories
D316546, Sep 13 1988 International Business Machines Corporation Rack of modems
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Jan 12 1990HITZLER, JURGENSiemens AktiengesellschaftASSIGNMENT OF ASSIGNORS INTEREST 0052250585 pdf
Jan 24 1990Siemens Aktiengesellschaft(assignment on the face of the patent)
Nov 21 1997Siemens AktiengesellschaftTEKTRONIX INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0088480281 pdf
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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