NL182433B - Samenvouwbaar zoekerstelsel voor een eenogige spiegelreflexcamera. - Google Patents

Samenvouwbaar zoekerstelsel voor een eenogige spiegelreflexcamera.

Info

Publication number
NL182433B
NL182433B NLAANVRAGE7206200,A NL182433DA NL182433B NL 182433 B NL182433 B NL 182433B NL 182433D A NL182433D A NL 182433DA NL 182433 B NL182433 B NL 182433B
Authority
NL
Netherlands
Prior art keywords
foldable
reflex camera
finding system
mirror reflex
eyed
Prior art date
Application number
NLAANVRAGE7206200,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 NL182433B publication Critical patent/NL182433B/nl

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Bridges Or Land Bridges (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
NLAANVRAGE7206200,A 1951-03-07 Samenvouwbaar zoekerstelsel voor een eenogige spiegelreflexcamera. NL182433B (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL709240X 1951-03-07
NL760654X 1953-10-29

Publications (1)

Publication Number Publication Date
NL182433B true NL182433B (nl)

Family

ID=31980708

Family Applications (4)

Application Number Title Priority Date Filing Date
NL159679D NL159679A (nl) 1951-03-07
NL89595D NL89595C (nl) 1951-03-07
NLAANVRAGE7206200,A NL182433B (nl) 1951-03-07 Samenvouwbaar zoekerstelsel voor een eenogige spiegelreflexcamera.
NL6811291.A NL159680B (nl) 1951-03-07 Werkwijze om in koolwaterstoffen oplosbare copolymeren te bereiden.

Family Applications Before (2)

Application Number Title Priority Date Filing Date
NL159679D NL159679A (nl) 1951-03-07
NL89595D NL89595C (nl) 1951-03-07

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL6811291.A NL159680B (nl) 1951-03-07 Werkwijze om in koolwaterstoffen oplosbare copolymeren te bereiden.

Country Status (4)

Country Link
BE (3) BE532795A (nl)
FR (3) FR1051786A (nl)
GB (3) GB709240A (nl)
NL (4) NL159680B (nl)

Also Published As

Publication number Publication date
BE509661A (nl)
GB760654A (en) 1956-11-07
GB709240A (en) 1954-05-19
NL159679A (nl)
BE509662A (nl)
FR1051869A (fr) 1954-01-19
FR67282E (fr)
GB709241A (en) 1954-05-19
BE532795A (nl)
FR1051786A (fr) 1954-01-19
NL159680B (nl)
NL89595C (nl)

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