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The ornamental design for a portable calculating machine, as shown and described. |
FIG. 1 is a perspective view of a first embodiment of a portable calculating machine showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a rear elevational view thereof; and
FIG. 6 is a perspective view of a second embodiment of the portable calculating machine;
FIG. 7 is a front elevational view thereof;
FIG. 8 is a top plan view thereof;
FIG. 9 is a right side elevational view thereof, the left side being a mirror image of the right side shown; and
FIG. 10 is a rear elevational view thereof.
FIG. 11 is a bottom view of the first and second embodiments of the portable calculating machine.
Leer, Stuart D., Beitler, Myron
Patent | Priority | Assignee | Title |
D265065, | May 12 1980 | Powers Medical Systems, Inc. | Cardiac pacemaker tester |
D276920, | Mar 26 1979 | LaFrance Corporation | Readily disassembled instrument housing |
D303112, | Aug 20 1986 | Universal Data Incorporated | Portable hand held data entry terminal |
D335892, | Dec 23 1991 | Casio Computer Co., Ltd. | Electronic calculator |
D943661, | May 23 2019 | HAREX INFOTECH INC | Electronic calculator |
Patent | Priority | Assignee | Title |
3887791, | |||
226858, |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Mar 21 1977 | Litton Business Systems, Inc. | (assignment on the face of the patent) | / | |||
Oct 16 1984 | MONROE SYSTEMS FOR BUSINESS, INC A NE CORP | MELLON BANK NATIONAL ASSOCIATION | SECURITY INTEREST SEE DOCUMENT FOR DETAILS | 004321 | /0976 | |
Nov 26 1984 | LITTON BUSINESS SYSTEMS, INC A NY CORP | MONROE SYSTEMS FOR BUSINESS, INC A NE CORP | ASSIGNMENT OF ASSIGNORS INTEREST | 004423 | /0130 | |
Sep 18 1990 | MONROE SYSTEMS FOR BUSINESS, INC , A CORP OF NV | MELLON BANK EAST PSFS NATIONAL ASSOCIATION | SECURITY INTEREST SEE DOCUMENT FOR DETAILS | 005652 | /0030 |
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