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.)
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Daumas SA Ets
Original Assignee
Daumas SA Ets
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Filing date
Publication date
Application filed by Daumas SA EtsfiledCriticalDaumas SA Ets
Priority to FR7500311ApriorityCriticalpatent/FR2297467A1/fr
Publication of FR2297467A1publicationCriticalpatent/FR2297467A1/fr
Application grantedgrantedCritical
Publication of FR2297467B3publicationCriticalpatent/FR2297467B3/fr
G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
G09F19/00—Advertising or display means not otherwise provided for
G09F19/12—Advertising or display means not otherwise provided for using special optical effects
G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
G—PHYSICS
G08—SIGNALLING
G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
G08B25/14—Central alarm receiver or annunciator arrangements
Landscapes
Business, Economics & Management
(AREA)
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Emergency Management
(AREA)
Accounting & Taxation
(AREA)
Marketing
(AREA)
Engineering & Computer Science
(AREA)
Theoretical Computer Science
(AREA)
Selective Calling Equipment
(AREA)
Fire Alarms
(AREA)
Alarm Systems
(AREA)
FR7500311A1975-01-071975-01-07Procede et dispositif de tele-affichage selectif d'images
GrantedFR2297467A1
(fr)