FR2042461A7 - - Google Patents
Info
- Publication number
- FR2042461A7 FR2042461A7 FR7016625A FR7016625A FR2042461A7 FR 2042461 A7 FR2042461 A7 FR 2042461A7 FR 7016625 A FR7016625 A FR 7016625A FR 7016625 A FR7016625 A FR 7016625A FR 2042461 A7 FR2042461 A7 FR 2042461A7
- Authority
- FR
- France
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
- G01V8/26—Detecting, e.g. by using light barriers using multiple transmitters or receivers using mechanical scanning systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2335869 | 1969-05-07 | ||
GB2435769 | 1969-05-13 | ||
GB5565469 | 1969-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2042461A7 true FR2042461A7 (de) | 1971-02-12 |
Family
ID=27258207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7016625A Expired FR2042461A7 (de) | 1969-05-07 | 1970-05-06 |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2022546A1 (de) |
FR (1) | FR2042461A7 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2538567A1 (fr) * | 1982-12-24 | 1984-06-29 | Bocquet Expl Bureau Etu Indles | Dispositif de balayage photo-electrique par deviation d'un rayon lumineux, et application a la determination des cotes minimales et maximales d'un contour |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU6594080A (en) * | 1980-01-19 | 1981-07-30 | W. Vinten Ltd. | Intruder alarm systems |
-
1970
- 1970-05-06 FR FR7016625A patent/FR2042461A7/fr not_active Expired
- 1970-05-08 DE DE19702022546 patent/DE2022546A1/de active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2538567A1 (fr) * | 1982-12-24 | 1984-06-29 | Bocquet Expl Bureau Etu Indles | Dispositif de balayage photo-electrique par deviation d'un rayon lumineux, et application a la determination des cotes minimales et maximales d'un contour |
Also Published As
Publication number | Publication date |
---|---|
DE2022546A1 (de) | 1970-11-19 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |