FR1591751A - - Google Patents

Info

Publication number
FR1591751A
FR1591751A FR1591751DA FR1591751A FR 1591751 A FR1591751 A FR 1591751A FR 1591751D A FR1591751D A FR 1591751DA FR 1591751 A FR1591751 A FR 1591751A
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
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
Application granted granted Critical
Publication of FR1591751A publication Critical patent/FR1591751A/fr
Expired legal-status Critical Current

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)
FR1591751D 1967-11-14 1968-11-13 Expired FR1591751A (xx)

Applications Claiming Priority (3)

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

Publications (1)

Publication Number Publication Date
FR1591751A true FR1591751A (xx) 1970-05-04

Family

ID=27418406

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1591751D Expired FR1591751A (xx) 1967-11-14 1968-11-13

Country Status (7)

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

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
NL164396B (nl) 1980-07-15
DE1817823C3 (de) 1974-07-25
DE1817823B2 (de) 1974-01-03
CH494975A (de) 1970-08-15
SE347581B (xx) 1972-08-07
JPS5126808B1 (xx) 1976-08-09
GB1253237A (xx) 1971-11-10
DE1808532A1 (de) 1969-08-07
NL6815702A (xx) 1969-05-19
DE1817823A1 (de) 1972-03-09
DE1808532B2 (de) 1972-01-27

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Legal Events

Date Code Title Description
ST Notification of lapse