NL184568C - Gasdoorlaatbaar hol voorwerp. - Google Patents

Gasdoorlaatbaar hol voorwerp.

Info

Publication number
NL184568C
NL184568C NLAANVRAGE7606556,A NL184568DA NL184568C NL 184568 C NL184568 C NL 184568C NL 184568D A NL184568D A NL 184568DA NL 184568 C NL184568 C NL 184568C
Authority
NL
Netherlands
Prior art keywords
gas portable
cave object
gas
portable cave
cave
Prior art date
Application number
NLAANVRAGE7606556,A
Other languages
English (en)
Original Assignee
Norton Co
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 NL184568C publication Critical patent/NL184568C/nl

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00028—Bifocal lenses; Multifocal lenses
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/20—Uniting glass pieces by fusing without substantial reshaping
    • C03B23/22—Uniting glass lenses, e.g. forming bifocal lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ophthalmology & Optometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Eyeglasses (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
NLAANVRAGE7606556,A 1953-01-23 Gasdoorlaatbaar hol voorwerp. NL184568C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US321034XA 1953-01-23 1953-01-23

Publications (1)

Publication Number Publication Date
NL184568C true NL184568C (nl)

Family

ID=21863118

Family Applications (2)

Application Number Title Priority Date Filing Date
NLAANVRAGE7606556,A NL184568C (nl) 1953-01-23 Gasdoorlaatbaar hol voorwerp.
NL85388D NL85388C (nl) 1953-01-23

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL85388D NL85388C (nl) 1953-01-23

Country Status (5)

Country Link
BE (1) BE525925A (nl)
CH (1) CH321034A (nl)
FR (1) FR1095674A (nl)
GB (1) GB739341A (nl)
NL (2) NL85388C (nl)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149948A (en) * 1957-10-07 1964-09-22 Pittsburgh Plate Glass Co Method for forming multifocal lens blanks
NL247751A (nl) * 1959-01-26
US3130028A (en) * 1959-05-26 1964-04-21 Pittsburgh Plate Glass Co Glass feeding
US3130029A (en) * 1959-06-23 1964-04-21 Bausch & Lomb Method for making fused multifocal lenses
GB990483A (en) * 1962-07-04 1965-04-28 Pilkington Brothers Ltd Improvements in or relating to the pressure moulding of articles
DE102006020991B4 (de) 2006-05-04 2009-09-10 Carl Zeiss Ag Verfahren zum Herstellen eines Formkörpers aus Glas oder Glaskeramik

Also Published As

Publication number Publication date
CH321034A (de) 1957-04-30
FR1095674A (fr) 1955-06-06
GB739341A (en) 1955-10-26
NL85388C (nl)
BE525925A (nl)

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