Calculator
Latest Industrial Maintenance Systems, Inc. Patents:
Description
FIG. 1 is a left end elevational view of a calculator showing my new design;
FIG. 2 is a right end elevational view;
FIG. 3 is a front elevational view;
FIG. 4 is a rear elevational view;
FIG. 5 is a bottom plan view; and
FIG. 6 is a top plan view.
Referenced Cited
U.S. Patent Documents
D146801 | May 1947 | Lens |
D224019 | June 1972 | Kalvitis |
D234360 | February 1975 | Duncan |
D263136 | February 23, 1982 | Gore |
Patent History
Patent number: D287978
Type: Grant
Filed: Dec 26, 1984
Date of Patent: Jan 27, 1987
Assignee: Industrial Maintenance Systems, Inc. (Pittsburgh, PA)
Inventor: John M. Zatezalo (Pittsburgh, PA)
Primary Examiner: Louis S. Zarfas
Law Firm: Buell, Ziesenheim, Beck & Alstadt
Application Number: 6/686,422
Type: Grant
Filed: Dec 26, 1984
Date of Patent: Jan 27, 1987
Assignee: Industrial Maintenance Systems, Inc. (Pittsburgh, PA)
Inventor: John M. Zatezalo (Pittsburgh, PA)
Primary Examiner: Louis S. Zarfas
Law Firm: Buell, Ziesenheim, Beck & Alstadt
Application Number: 6/686,422
Classifications
Current U.S. Class:
With Keyboard (D18/7)