FR741728A - - Google Patents
Info
- Publication number
- FR741728A FR741728A FR741728DA FR741728A FR 741728 A FR741728 A FR 741728A FR 741728D A FR741728D A FR 741728DA FR 741728 A FR741728 A FR 741728A
- Authority
- FR
- France
- 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
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
- G01P3/40—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light using stroboscopic means
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
- G11B23/42—Marks for indexing, speed-controlling, synchronising, or timing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
- G11B33/022—Cases
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US504307A US1933305A (en) | 1930-12-23 | 1930-12-23 | Direct-reading multispeed speedoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR741728A true FR741728A (ro) | 1933-02-18 |
Family
ID=24005709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR741728D Expired FR741728A (ro) | 1930-12-23 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1933305A (ro) |
| FR (1) | FR741728A (ro) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2736228A (en) * | 1956-02-28 | hardy | ||
| US2646284A (en) * | 1950-09-23 | 1953-07-21 | Herbert B Weingarden | Record adapter and automatic speed changer |
| US2985059A (en) * | 1956-06-28 | 1961-05-23 | Morgan Dev Lab Inc | Phonograph record for praxinoscopic devices |
| DE2748704C3 (de) * | 1977-10-29 | 1981-03-19 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Stroboskopvorrichtung an einem Plattenspieler |
| US4582427A (en) * | 1983-10-13 | 1986-04-15 | The United States Of America As Represented By The Secretary Of The Air Force | Test target for adaptive optics |
| US4706237A (en) * | 1984-10-05 | 1987-11-10 | U.S. Philips Corporation | Disc player with strobe light illumination |
-
0
- FR FR741728D patent/FR741728A/fr not_active Expired
-
1930
- 1930-12-23 US US504307A patent/US1933305A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1933305A (en) | 1933-10-31 |