FR1320002A - Screening device - Google Patents
Screening deviceInfo
- Publication number
- FR1320002A FR1320002A FR796103A FR796103A FR1320002A FR 1320002 A FR1320002 A FR 1320002A FR 796103 A FR796103 A FR 796103A FR 796103 A FR796103 A FR 796103A FR 1320002 A FR1320002 A FR 1320002A
- Authority
- FR
- France
- Prior art keywords
- screening device
- screening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
- G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
- G08B13/184—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier using radiation reflectors
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR796103A FR1320002A (en) | 1959-05-29 | 1959-05-29 | Screening device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR796103A FR1320002A (en) | 1959-05-29 | 1959-05-29 | Screening device |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1320002A true FR1320002A (en) | 1963-03-08 |
Family
ID=8715410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR796103A Expired FR1320002A (en) | 1959-05-29 | 1959-05-29 | Screening device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1320002A (en) |
-
1959
- 1959-05-29 FR FR796103A patent/FR1320002A/en not_active Expired
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