CH257134A - Course Instructor. - Google Patents
Course Instructor.Info
- Publication number
 - CH257134A CH257134A CH257134DA CH257134A CH 257134 A CH257134 A CH 257134A CH 257134D A CH257134D A CH 257134DA CH 257134 A CH257134 A CH 257134A
 - Authority
 - CH
 - Switzerland
 - Prior art keywords
 - course instructor
 - instructor
 - course
 - Prior art date
 
Links
Classifications
- 
        
- G—PHYSICS
 - G01—MEASURING; TESTING
 - G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
 - G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
 - G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
 
 
Landscapes
- Engineering & Computer Science (AREA)
 - Computer Networks & Wireless Communication (AREA)
 - Physics & Mathematics (AREA)
 - General Physics & Mathematics (AREA)
 - Radar, Positioning & Navigation (AREA)
 - Remote Sensing (AREA)
 - Variable-Direction Aerials And Aerial Arrays (AREA)
 
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title | 
|---|---|---|---|
| US604462XA | 1942-04-13 | 1942-04-13 | 
Publications (1)
| Publication Number | Publication Date | 
|---|---|
| CH257134A true CH257134A (en) | 1948-09-30 | 
Family
ID=22029526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date | 
|---|---|---|---|
| CH257134D CH257134A (en) | 1942-04-13 | 1946-03-20 | Course Instructor. | 
Country Status (4)
| Country | Link | 
|---|---|
| BE (1) | BE466300A (en) | 
| CH (1) | CH257134A (en) | 
| FR (1) | FR928738A (en) | 
| GB (1) | GB604462A (en) | 
- 
        0
        
- BE BE466300D patent/BE466300A/xx unknown
 
 - 
        1943
        
- 1943-04-12 GB GB23173/45A patent/GB604462A/en not_active Expired
 
 - 
        1946
        
- 1946-03-20 CH CH257134D patent/CH257134A/en unknown
 - 1946-04-18 FR FR928738D patent/FR928738A/en not_active Expired
 
 
Also Published As
| Publication number | Publication date | 
|---|---|
| BE466300A (en) | |
| GB604462A (en) | 1948-07-05 | 
| FR928738A (en) | 1947-12-05 | 
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