NL6815702A - - Google Patents

Info

Publication number
NL6815702A
NL6815702A NL6815702A NL6815702A NL6815702A NL 6815702 A NL6815702 A NL 6815702A NL 6815702 A NL6815702 A NL 6815702A NL 6815702 A NL6815702 A NL 6815702A NL 6815702 A NL6815702 A NL 6815702A
Authority
NL
Netherlands
Application number
NL6815702A
Other versions
NL164396B (nl
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 filed Critical
Publication of NL6815702A publication Critical patent/NL6815702A/xx
Publication of NL164396B publication Critical patent/NL164396B/xx

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Projection Apparatus (AREA)
  • Optical Elements Other Than Lenses (AREA)
NL6815702A 1967-11-14 1968-11-04 Overhead-projector met anti-verblindingsscherm. NL164396B (nl)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US68295167A 1967-11-14 1967-11-14
US71226268A 1968-03-11 1968-03-11
US71226368A 1968-03-11 1968-03-11

Publications (2)

Publication Number Publication Date
NL6815702A true NL6815702A (https=) 1969-05-19
NL164396B NL164396B (nl) 1980-07-15

Family

ID=27418406

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6815702A NL164396B (nl) 1967-11-14 1968-11-04 Overhead-projector met anti-verblindingsscherm.

Country Status (7)

Country Link
JP (1) JPS5126808B1 (https=)
CH (1) CH494975A (https=)
DE (2) DE1817823C3 (https=)
FR (1) FR1591751A (https=)
GB (1) GB1253237A (https=)
NL (1) NL164396B (https=)
SE (1) SE347581B (https=)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2914682C3 (de) * 1979-04-11 1982-05-13 Schott Glaswerke, 6500 Mainz Verfahren zur Herstellung einer als Lichtblende wirkenden Glasplatte und nach diesem Verfahren hergestellte Glasplatte
DE2937433C2 (de) * 1979-09-15 1981-08-06 Standard Elektrik Lorenz Ag, 7000 Stuttgart Belichtungsanordnung
DE3127247A1 (de) * 1981-07-10 1983-01-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zum herstellen eines jalousiefilters und vorrichtung zur durchfuehrung des verfahrens
DE3414848A1 (de) * 1983-04-26 1984-11-22 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Lichtdurchlaessiger verbundkoerper
WO2021198888A1 (en) 2020-03-31 2021-10-07 Pi Industries Ltd. An improved enzyme catalyzed carboxylation reaction

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255665A (en) * 1964-05-21 1966-06-14 Minnesota Mining & Mfg Article of manufacture for controlling light transmittance
US3340765A (en) * 1964-07-27 1967-09-12 Bell Telephone Labor Inc Projection system

Also Published As

Publication number Publication date
GB1253237A (https=) 1971-11-10
DE1817823A1 (de) 1972-03-09
DE1808532A1 (de) 1969-08-07
NL164396B (nl) 1980-07-15
FR1591751A (https=) 1970-05-04
SE347581B (https=) 1972-08-07
DE1817823C3 (de) 1974-07-25
JPS5126808B1 (https=) 1976-08-09
CH494975A (de) 1970-08-15
DE1808532B2 (de) 1972-01-27
DE1817823B2 (de) 1974-01-03

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee