FR519990A - Procédé applicable aux prises de terre des stations radiotélégraphiques - Google Patents
Procédé applicable aux prises de terre des stations radiotélégraphiquesInfo
- Publication number
- FR519990A FR519990A FR519990DA FR519990A FR 519990 A FR519990 A FR 519990A FR 519990D A FR519990D A FR 519990DA FR 519990 A FR519990 A FR 519990A
- Authority
- FR
- France
- Prior art keywords
- radiotelegraph
- stations
- method applicable
- earth electrodes
- earth
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE299766T | 1917-03-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR519990A true FR519990A (fr) | 1921-06-18 |
Family
ID=6550763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR519990D Expired FR519990A (fr) | 1917-03-22 | 1920-07-09 | Procédé applicable aux prises de terre des stations radiotélégraphiques |
Country Status (3)
Country | Link |
---|---|
DE (3) | DE299766C (enrdf_load_html_response) |
FR (1) | FR519990A (enrdf_load_html_response) |
GB (2) | GB148788A (enrdf_load_html_response) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3127612A (en) * | 1962-04-02 | 1964-03-31 | Granger Associates | Ground screen for vertical log periodic antenna |
US3253279A (en) * | 1963-02-01 | 1966-05-24 | Trg Inc | Bandwidth monopole antenna having low ground losses due to a circumferential ground ring |
-
1917
- 1917-03-22 DE DE1917299766D patent/DE299766C/de not_active Expired
- 1917-11-08 DE DE1917305043D patent/DE305043C/de not_active Expired
- 1917-11-23 DE DE1917305044D patent/DE305044C/de not_active Expired
-
1920
- 1920-07-09 FR FR519990D patent/FR519990A/fr not_active Expired
- 1920-07-10 GB GB2061720A patent/GB148788A/en not_active Expired
- 1920-07-10 GB GB2061320A patent/GB148786A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE299766C (enrdf_load_html_response) | 1920-12-31 |
DE305043C (enrdf_load_html_response) | 1920-12-31 |
GB148788A (en) | 1921-10-10 |
GB148786A (en) | 1921-10-10 |
DE305044C (enrdf_load_html_response) | 1920-12-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR519990A (fr) | Procédé applicable aux prises de terre des stations radiotélégraphiques | |
FR485846A (fr) | Perfectionnements aux béquilles | |
FR486902A (fr) | Perfectionnements apportés aux béquilles | |
FR490679A (fr) | Nouveau procédé de désulfitage des mouts | |
FR497675A (fr) | Méthode de construction des condensateurs | |
DK30387C (da) | Fremgangsmaade til Behandling af Mineraler. | |
FR518132A (fr) | Procédé de concentration des minerais | |
CH76769A (fr) | Procédé de construction de maisons économiques | |
FR533524A (fr) | Procédé de formation d'électrodes en charbon | |
FR492648A (fr) | Procédé perfectionné pour la concentration des minerais | |
DK30619C (da) | Fremgangsmaade til Fremstilling af Ammoniak. | |
FR491861A (fr) | Perfectionnements apportés aux montures de rideaux | |
FR526090A (fr) | Procédé de construction des batiments | |
FR489388A (fr) | Procédé de reconstitution artificielle des houilles | |
FR485090A (fr) | Perfectionnements aux béquilles | |
DK26225C (da) | Pæl til Ramning ad hydrauslik Vej. | |
FR487733A (fr) | Nouveau procédé de ventilation | |
DK29879C (da) | Fremgangsmaade til Fremstilling af kunstige Garvestoffer. | |
FR491445A (fr) | Perfectionnements aux arrache-pointes | |
FI6729A (fi) | Förfaringssätt för överföring av ammoniumnitrat i kornig form | |
FR520529A (fr) | Procédé de concentration de minerais | |
FR498770A (fr) | Plot de construction | |
CH82745A (fr) | Plot de construction | |
FR535729A (fr) | Procédé de production de pièces profilées bonifiées en aciers austéniques au manganèse | |
FR516684A (fr) | Procédé de concentration de minerais par flottage |