Battery comparator educational board
Description
FIG. 1 is a front perspective view of a battery comparator educational board showing my new design;
FIG. 2 is a left front perspective view thereof shown on a reduced scale; and,
FIG. 3 is a rear perspective view thereof.
Referenced Cited
U.S. Patent Documents
Other references
2374800 | May 1945 | Bohlke |
2826628 | March 1958 | Kruse |
3295226 | January 1967 | Corcoran |
- Leybold Physics Catalog, 7-1966, p. 117, Control Panels at center of page.
Patent History
Patent number: D243847
Type: Grant
Filed: Oct 15, 1974
Date of Patent: Mar 29, 1977
Inventor: Jack N. Holcomb (Fort Lauderdale, FL)
Primary Examiner: Joel Stearman
Assistant Examiner: C. A. Rademaker
Attorney: Herbert C. Schulze
Application Number: 5/514,896
Type: Grant
Filed: Oct 15, 1974
Date of Patent: Mar 29, 1977
Inventor: Jack N. Holcomb (Fort Lauderdale, FL)
Primary Examiner: Joel Stearman
Assistant Examiner: C. A. Rademaker
Attorney: Herbert C. Schulze
Application Number: 5/514,896
Classifications
Current U.S. Class:
Movable Indicator Or Changeable Exhibitor (D19/64)
International Classification: D1907;
International Classification: D1907;