FR828493A - Warning systems for overtaking signals - Google Patents
Warning systems for overtaking signalsInfo
- Publication number
- FR828493A FR828493A FR828493DA FR828493A FR 828493 A FR828493 A FR 828493A FR 828493D A FR828493D A FR 828493DA FR 828493 A FR828493 A FR 828493A
- Authority
- FR
- France
- Prior art keywords
- overtaking
- signals
- warning systems
- warning
- systems
- 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
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
- G01H3/10—Amplitude; Power
- G01H3/12—Amplitude; Power by electric means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR828493T | 1937-01-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR828493A true FR828493A (en) | 1938-05-18 |
Family
ID=9283797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR828493D Expired FR828493A (en) | 1937-01-30 | 1937-01-30 | Warning systems for overtaking signals |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR828493A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE950717C (en) * | 1951-07-24 | 1956-10-11 | Physikalisch Tech Werkstaetten | Overhaul signal receiving system |
-
1937
- 1937-01-30 FR FR828493D patent/FR828493A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE950717C (en) * | 1951-07-24 | 1956-10-11 | Physikalisch Tech Werkstaetten | Overhaul signal receiving system |
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