FR524119A - électro-diapason - Google Patents
électro-diapasonInfo
- Publication number
- FR524119A FR524119A FR524119A FR524119DA FR524119A FR 524119 A FR524119 A FR 524119A FR 524119 A FR524119 A FR 524119A FR 524119D A FR524119D A FR 524119DA FR 524119 A FR524119 A FR 524119A
- Authority
- FR
- France
- Prior art keywords
- electro
- tuning fork
- tuning
- fork
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/30—Electromagnetic relays specially adapted for actuation by AC
- H01H51/32—Frequency relays; Mechanically-tuned relays
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR524119T | 1917-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR524119A true FR524119A (fr) | 1921-08-30 |
Family
ID=8919070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR524119A Expired FR524119A (fr) | 1917-11-17 | 1917-11-17 | électro-diapason |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR524119A (fr) |
-
1917
- 1917-11-17 FR FR524119A patent/FR524119A/fr not_active Expired
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