FR39365E - Perfectionnements apportés aux altimètres - Google Patents
Perfectionnements apportés aux altimètresInfo
- Publication number
- FR39365E FR39365E FR39365DA FR39365E FR 39365 E FR39365 E FR 39365E FR 39365D A FR39365D A FR 39365DA FR 39365 E FR39365 E FR 39365E
- Authority
- FR
- France
- Prior art keywords
- altimeters
- 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
-
- 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
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
- G01S11/023—Systems for determining distance or velocity not using reflection or reradiation using radio waves using impedance elements varying with distance
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/06—Signs, boards or panels, illuminated from behind the insignia using individual cut-out symbols or cut-out silhouettes, e.g. perforated signs
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar Systems Or Details Thereof (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US319989A US1969537A (en) | 1928-11-17 | 1928-11-17 | Method and means for determining altitude from aircraft |
Publications (1)
Publication Number | Publication Date |
---|---|
FR39365E true FR39365E (fr) | 1931-10-19 |
Family
ID=23244390
Family Applications (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR684859D Expired FR684859A (fr) | 1928-11-17 | 1929-11-14 | Perfectionnements apportés aux altimètres |
FR38408D Expired FR38408E (fr) | 1928-11-17 | 1930-04-03 | Perfectionnements apportés aux altimètres |
FR38438D Expired FR38438E (fr) | 1928-11-17 | 1930-05-02 | Plaque-écriteau distinctif pour véhicules automoteurs |
FR38606D Expired FR38606E (fr) | 1928-11-17 | 1930-05-22 | Perfectionnements apportés aux altimètres |
FR39365D Expired FR39365E (fr) | 1928-11-17 | 1930-09-24 | Perfectionnements apportés aux altimètres |
FR42061D Expired FR42061E (fr) | 1928-11-17 | 1932-06-17 | Perfectionnements apportés aux altimètres |
Family Applications Before (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR684859D Expired FR684859A (fr) | 1928-11-17 | 1929-11-14 | Perfectionnements apportés aux altimètres |
FR38408D Expired FR38408E (fr) | 1928-11-17 | 1930-04-03 | Perfectionnements apportés aux altimètres |
FR38438D Expired FR38438E (fr) | 1928-11-17 | 1930-05-02 | Plaque-écriteau distinctif pour véhicules automoteurs |
FR38606D Expired FR38606E (fr) | 1928-11-17 | 1930-05-22 | Perfectionnements apportés aux altimètres |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR42061D Expired FR42061E (fr) | 1928-11-17 | 1932-06-17 | Perfectionnements apportés aux altimètres |
Country Status (3)
Country | Link |
---|---|
US (1) | US1969537A (fr) |
FR (6) | FR684859A (fr) |
GB (1) | GB349426A (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT454124A (fr) * | 1940-06-11 | |||
GB563469A (en) * | 1942-05-06 | 1944-08-16 | Gen Electric Co Ltd | Improvements in blind-landing devices for aircraft |
US2475020A (en) * | 1943-11-23 | 1949-07-05 | Gabrilovitch Leonide | Method for augmenting small phase differences |
US2540076A (en) * | 1944-09-28 | 1951-02-06 | Oscar H Dicke | Radio cycle summation measuring apparatus |
US2513530A (en) * | 1945-12-04 | 1950-07-04 | Stratton Andrew | Impedance measuring device utilizing oscillatory electric circuits |
US2530905A (en) * | 1946-04-06 | 1950-11-21 | Csf | Aircraft altimeter, particularly applicable to low altitudes |
US2665420A (en) * | 1949-04-19 | 1954-01-05 | Sun Oil Co | Radiant energy system for distance measuring |
GB1031251A (en) * | 1961-09-05 | 1966-06-02 | Roy Thomason | Improvements relating to the control of the altitude of aircraft |
DE1207493B (de) * | 1962-04-18 | 1965-12-23 | Schoeller & Co Elektrotech | Elektrischer Strom- oder Spannungsindikator nach dem Drehspulprinzip in Kleinstausfuehrung |
US3273112A (en) * | 1962-12-03 | 1966-09-13 | Leland S Hobson | Tuned seismic wave communication system |
-
1928
- 1928-11-17 US US319989A patent/US1969537A/en not_active Expired - Lifetime
-
1929
- 1929-11-14 FR FR684859D patent/FR684859A/fr not_active Expired
- 1929-11-18 GB GB35243/29A patent/GB349426A/en not_active Expired
-
1930
- 1930-04-03 FR FR38408D patent/FR38408E/fr not_active Expired
- 1930-05-02 FR FR38438D patent/FR38438E/fr not_active Expired
- 1930-05-22 FR FR38606D patent/FR38606E/fr not_active Expired
- 1930-09-24 FR FR39365D patent/FR39365E/fr not_active Expired
-
1932
- 1932-06-17 FR FR42061D patent/FR42061E/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR38408E (fr) | 1931-06-03 |
US1969537A (en) | 1934-08-07 |
FR42061E (fr) | 1933-05-19 |
FR38438E (fr) | 1931-06-03 |
GB349426A (en) | 1931-05-18 |
FR38606E (fr) | 1931-06-24 |
FR684859A (fr) | 1930-07-02 |
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