NL161647C - Elektromagnetisch groeftasterelement. - Google Patents

Elektromagnetisch groeftasterelement.

Info

Publication number
NL161647C
NL161647C NL7108816.A NL7108816A NL161647C NL 161647 C NL161647 C NL 161647C NL 7108816 A NL7108816 A NL 7108816A NL 161647 C NL161647 C NL 161647C
Authority
NL
Netherlands
Prior art keywords
table element
groove table
electromagnetic groove
electromagnetic
groove
Prior art date
Application number
NL7108816.A
Other languages
English (en)
Dutch (nl)
Other versions
NL161647B (nl
NL7108816A (xx
Original Assignee
Grado Joseph
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Grado Joseph filed Critical Grado Joseph
Publication of NL7108816A publication Critical patent/NL7108816A/xx
Publication of NL161647B publication Critical patent/NL161647B/xx
Application granted granted Critical
Publication of NL161647C publication Critical patent/NL161647C/xx

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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R11/12—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnets (AREA)
  • Moving Of Heads (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
NL7108816.A 1970-06-29 1971-06-25 Elektromagnetisch groeftasterelement. NL161647C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5062470A 1970-06-29 1970-06-29

Publications (3)

Publication Number Publication Date
NL7108816A NL7108816A (xx) 1971-12-31
NL161647B NL161647B (nl) 1979-09-17
NL161647C true NL161647C (nl) 1980-02-15

Family

ID=21966368

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7108816.A NL161647C (nl) 1970-06-29 1971-06-25 Elektromagnetisch groeftasterelement.

Country Status (9)

Country Link
US (1) US3683128A (xx)
JP (1) JPS5021241B1 (xx)
CA (1) CA930674A (xx)
CH (1) CH541269A (xx)
DE (1) DE2132127C3 (xx)
ES (1) ES392652A1 (xx)
FR (1) FR2096572B1 (xx)
GB (1) GB1318665A (xx)
NL (1) NL161647C (xx)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3881073A (en) * 1973-11-12 1975-04-29 Joseph F Grado Replaceable stylus-lever generator module for an electromagnetic cartridge
US4174111A (en) * 1973-11-12 1979-11-13 Grado Joseph F Compressive pivot suspension system for an electromagnetic cartridge
US4031336A (en) * 1975-02-10 1977-06-21 Grado Joseph F Electromagnetic pickup with magnetic gap displacement generator
AT341240B (de) * 1975-07-29 1978-01-25 Akg Akustische Kino Geraete Tonabnehmer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2114471A (en) * 1936-06-20 1938-04-19 Bell Telephone Labor Inc Sound recording and reproducing system
US2456338A (en) * 1945-03-26 1948-12-14 Pure Oil Co Catalytic polymerization of olefinic hydrocarbons
US2444336A (en) * 1946-01-30 1948-06-29 Lionel B Cornwell Electrical sound translating device
US3469040A (en) * 1965-04-15 1969-09-23 Empire Scient Corp Variable reluctance phonograph cartridge
FR1541427A (fr) * 1966-10-20 1968-10-04 Matsushita Electric Ind Co Ltd Pick-up magnétique de phonographe stéréophonique
DK124049B (da) * 1969-03-25 1972-09-04 Fonofilm Ind As Magnetisk pick-up.
US3694586A (en) * 1969-11-03 1972-09-26 Joseph F Grado Toroidal armature stereophonic pickup

Also Published As

Publication number Publication date
DE2132127C3 (de) 1974-12-12
ES392652A1 (es) 1973-08-01
FR2096572A1 (xx) 1972-02-18
NL161647B (nl) 1979-09-17
DE2132127A1 (de) 1972-01-05
GB1318665A (en) 1973-05-31
CH541269A (de) 1973-08-31
NL7108816A (xx) 1971-12-31
FR2096572B1 (xx) 1977-01-21
JPS5021241B1 (xx) 1975-07-22
CA930674A (en) 1973-07-24
US3683128A (en) 1972-08-08
DE2132127B2 (xx) 1974-05-16

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: GRADO