Teaching aid for ultrasound wave theory
Description
FIG. 1 is a front perspective view of a teaching aid for ultrasound wave theory showing my new design;
FIG. 2 is a front elevational view;
FIG. 3 is a rear elevational view; and,
FIG. 4 is a side elevational view, the opposite side being a mirror image thereof.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
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Patent History
Patent number: D403018
Type: Grant
Filed: Oct 1, 1996
Date of Patent: Dec 22, 1998
Assignee: Joseph S. Powell (Port St. John, FL)
Inventor: Joseph Scott Powell (Port St. John, FL)
Primary Examiner: Martie K. Holtje
Application Number: 0/60,583
Type: Grant
Filed: Oct 1, 1996
Date of Patent: Dec 22, 1998
Assignee: Joseph S. Powell (Port St. John, FL)
Inventor: Joseph Scott Powell (Port St. John, FL)
Primary Examiner: Martie K. Holtje
Application Number: 0/60,583
Classifications
Current U.S. Class:
Teaching Material (D19/59);
Movable Indicator Or Changeable Exhibitor (D19/64)
International Classification: 1907;
International Classification: 1907;