Alarm system tester
Description
FIG. 1 is a top front perspective view of an alarm system tester showing our new design, with the cover in an open position;
FIG. 2 is a bottom and left rear perspective view thereof with the cover closed;
FIG. 3 is a top plan view thereof, with the cover closed;
FIG. 4 is a rear elevational view thereof, with the cover closed;
FIG. 5 is a left side elevational view thereof with the cover closed.
Referenced Cited
U.S. Patent Documents
D194677 | February 1963 | Pickering |
D202702 | November 1965 | Wise |
D202922 | November 1965 | Huntsman |
D238562 | January 1976 | Sylvester |
3428888 | February 1969 | Nolte |
3986106 | October 12, 1976 | Shuck |
Patent History
Patent number: D256566
Type: Grant
Filed: Jul 27, 1978
Date of Patent: Aug 26, 1980
Inventors: Henry K. Zephir (Wilbraham, MA), Winthrop E. Wilson (Worcester, MA)
Primary Examiner: Nelson C. Holtje
Attorney: Alonzo L. Neal
Application Number: 5/928,841
Type: Grant
Filed: Jul 27, 1978
Date of Patent: Aug 26, 1980
Inventors: Henry K. Zephir (Wilbraham, MA), Winthrop E. Wilson (Worcester, MA)
Primary Examiner: Nelson C. Holtje
Attorney: Alonzo L. Neal
Application Number: 5/928,841
Classifications
Current U.S. Class:
Provided With Handle, Or Hand-held (D10/78);
Electrical Property (D10/75)
International Classification: D1004;
International Classification: D1004;