NL83707C - - Google Patents
Info
- Publication number
- NL83707C NL83707C NL83707DA NL83707C NL 83707 C NL83707 C NL 83707C NL 83707D A NL83707D A NL 83707DA NL 83707 C NL83707 C NL 83707C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
- H01Q19/15—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a line source, e.g. leaky waveguide antennas
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2663016X | 1948-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL83707C true NL83707C (ro) |
Family
ID=9687698
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL646405888A NL146717B (nl) | 1948-12-29 | Inrichting voor het uitvoeren van een exothermegasreactie met katalysatorbedden en een warmtewisselaar. | |
| NL83707D NL83707C (ro) | 1948-12-29 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL646405888A NL146717B (nl) | 1948-12-29 | Inrichting voor het uitvoeren van een exothermegasreactie met katalysatorbedden en een warmtewisselaar. |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2663016A (ro) |
| NL (2) | NL83707C (ro) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE569719A (ro) * | 1957-07-26 | |||
| US3881178A (en) * | 1973-04-03 | 1975-04-29 | Hazeltine Corp | Antenna system for radiating multiple planar beams |
| FR2653941B1 (fr) * | 1989-10-31 | 1992-02-28 | Thomson Lgt | Antenne de reception multifocale a direction de pointage unique pour plusieurs satellites. |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2039812A (en) * | 1929-12-03 | 1936-05-05 | Telefunken Gmbh | Signaling system |
| US2217321A (en) * | 1935-06-01 | 1940-10-08 | Telefunken Gmbh | Beam antenna |
| US2408435A (en) * | 1941-03-01 | 1946-10-01 | Bell Telephone Labor Inc | Pipe antenna and prism |
| US2367764A (en) * | 1942-01-30 | 1945-01-23 | Rca Corp | Frequency modulation detection system |
| US2426992A (en) * | 1942-05-27 | 1947-09-09 | Sperry Gyroscope Co Inc | Glide path transmitter |
| US2435988A (en) * | 1943-11-22 | 1948-02-17 | Sperry Corp | Aircraft landing system |
| US2530580A (en) * | 1946-10-30 | 1950-11-21 | Rca Corp | Multichannel signaling system |
-
0
- NL NL646405888A patent/NL146717B/xx unknown
- NL NL83707D patent/NL83707C/xx active
-
1949
- 1949-12-28 US US135482A patent/US2663016A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NL146717B (nl) | |
| US2663016A (en) | 1953-12-15 |