Electromagnetic bell
Description
FIG. 1 is a front elevational view of an electromagnetic bell showing our new design, the rear being the same in appearance as the front;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a top plan view thereof; and
FIG. 5 is a bottom plan view thereof.
Referenced Cited
U.S. Patent Documents
| D149907 | June 1948 | Rifkin |
| 2189181 | February 1940 | Rittenhouse |
| 2290717 | July 1942 | Swanson |
| 4300128 | November 10, 1981 | Ishii |
Patent History
Patent number: D304163
Type: Grant
Filed: Dec 11, 1986
Date of Patent: Oct 24, 1989
Assignee: Seikosha Co., Ltd.
Inventors: Junichi Aizawa (Tokyo), Shoichiro Kumazawa (Tokyo), Satoru Yamauchi (Tokyo), Isao Kondo (Tokyo)
Primary Examiner: Susan J. Lucas
Attorneys: Bruce L. Adams, Van C. Wilks
Application Number: 6/940,646
Type: Grant
Filed: Dec 11, 1986
Date of Patent: Oct 24, 1989
Assignee: Seikosha Co., Ltd.
Inventors: Junichi Aizawa (Tokyo), Shoichiro Kumazawa (Tokyo), Satoru Yamauchi (Tokyo), Isao Kondo (Tokyo)
Primary Examiner: Susan J. Lucas
Attorneys: Bruce L. Adams, Van C. Wilks
Application Number: 6/940,646
Classifications
Current U.S. Class:
D10/116