NL174676B - Spiegelreflexcamera. - Google Patents

Spiegelreflexcamera.

Info

Publication number
NL174676B
NL174676B NLAANVRAGE7104976,A NL174676DA NL174676B NL 174676 B NL174676 B NL 174676B NL 174676D A NL174676D A NL 174676DA NL 174676 B NL174676 B NL 174676B
Authority
NL
Netherlands
Prior art keywords
reflex camera
mirror reflex
mirror
camera
reflex
Prior art date
Application number
NLAANVRAGE7104976,A
Other languages
English (en)
Original Assignee
Polaroid Corp
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.)
Publication of NL174676B publication Critical patent/NL174676B/nl

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
NLAANVRAGE7104976,A 1952-02-25 Spiegelreflexcamera. NL174676B (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB314778X 1952-02-25

Publications (1)

Publication Number Publication Date
NL174676B true NL174676B (nl)

Family

ID=10323686

Family Applications (2)

Application Number Title Priority Date Filing Date
NL90114D NL90114C (nl) 1952-02-25
NLAANVRAGE7104976,A NL174676B (nl) 1952-02-25 Spiegelreflexcamera.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL90114D NL90114C (nl) 1952-02-25

Country Status (6)

Country Link
BE (1) BE517928A (nl)
CH (1) CH314778A (nl)
DE (1) DE972431C (nl)
FR (1) FR65072E (nl)
GB (1) GB700493A (nl)
NL (2) NL174676B (nl)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE490579C (de) * 1928-06-16 1930-01-30 Siemens & Halske Akt Ges Piezoelektrische Kristallanordnung
FR861808A (fr) * 1939-08-02 1941-02-18 Materiel Telephonique éléments piezo-électriques
DE863521C (de) * 1951-01-10 1953-01-19 Sueddeutsche App Fabrik G M B Piezoelektrisches Element

Also Published As

Publication number Publication date
FR65072E (fr) 1956-01-26
GB700493A (en) 1953-12-02
BE517928A (nl)
CH314778A (de) 1956-06-30
NL90114C (nl)
DE972431C (de) 1959-07-23

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