Sur-Gard Security Systems LTD
5Patents
0Active
5Granted
26Portfolio score
Filing activity: Apr 26, 1982 → Jun 19, 2000
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5511109A | Security system using call display | Electricity | 78 | Expired |
| US6032037A | Alarm panel with cellular communications backup | Physics | 31 | Expired |
| US6381307B1 | Method and apparatus for providing alarm security receiver with dialed number and caller I.D. | Electricity | 19 | Expired |
| US4477798A | Fire Alarm control system | Physics | 8 | Expired |
| US4517556A | Automatic bypass switch for household security system | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.