FR751047A - Pick-up refinements - Google Patents
Pick-up refinementsInfo
- Publication number
- FR751047A FR751047A FR751047DA FR751047A FR 751047 A FR751047 A FR 751047A FR 751047D A FR751047D A FR 751047DA FR 751047 A FR751047 A FR 751047A
- Authority
- FR
- France
- Prior art keywords
- refinements
- pick
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR751047T | 1933-02-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR751047A true FR751047A (en) | 1933-08-25 |
Family
ID=9153495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR751047D Expired FR751047A (en) | 1933-02-17 | 1933-02-17 | Pick-up refinements |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR751047A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2564136A (en) * | 1943-03-04 | 1951-08-14 | Hartford Nat Bank & Trust Co | Corundum crystal recording or reproducing member |
US2577149A (en) * | 1947-07-18 | 1951-12-04 | Union Carbide & Carbon Corp | Corundum phonograph needle and sound reproducing apparatus embodying same |
-
1933
- 1933-02-17 FR FR751047D patent/FR751047A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2564136A (en) * | 1943-03-04 | 1951-08-14 | Hartford Nat Bank & Trust Co | Corundum crystal recording or reproducing member |
US2577149A (en) * | 1947-07-18 | 1951-12-04 | Union Carbide & Carbon Corp | Corundum phonograph needle and sound reproducing apparatus embodying same |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR751047A (en) | Pick-up refinements | |
FR766942A (en) | Logging improvements | |
FR43928E (en) | Loudspeaker enhancements | |
FR782576A (en) | Compass refinements | |
FR43493E (en) | Filter refinements | |
FR753603A (en) | Improvements to dumpers | |
FR771353A (en) | Switch refinements | |
FR769050A (en) | Vacuum | |
FR784051A (en) | Clutch refinements | |
FR762684A (en) | Compass improvement | |
FR782632A (en) | Oscillator refinements | |
FR757400A (en) | Capacitor refinements | |
FR771072A (en) | Improvements to dumpers | |
FR769534A (en) | Vehicle refinements | |
FR770696A (en) | Carburetor improvements | |
FR731948A (en) | Pick-up refinements | |
FR775420A (en) | Crampons improvements | |
FR775855A (en) | Improvements to automatic mechanical pencils | |
FR774982A (en) | Clutch refinements | |
FR759626A (en) | Improvements to vacuum brushes | |
FR766977A (en) | Insect trap refinements | |
FR768521A (en) | Collector | |
FR764693A (en) | Bottle refinements | |
FR782804A (en) | Filter refinements | |
FR775488A (en) | Tractor improvements |