FR912774A - éponge métallique à double usage - Google Patents

éponge métallique à double usage

Info

Publication number
FR912774A
FR912774A FR912774DA FR912774A FR 912774 A FR912774 A FR 912774A FR 912774D A FR912774D A FR 912774DA FR 912774 A FR912774 A FR 912774A
Authority
FR
France
Prior art keywords
dual purpose
metal sponge
purpose metal
sponge
dual
Prior art date
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
English (en)
French (fr)
Inventor
Lewis Crowford Abraham
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 FR912774A publication Critical patent/FR912774A/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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/02—Scraping
    • A47L13/04—Scraping with steel wool
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/02—Scraping
    • A47L13/06—Scraping with wire brushes or wire meshes
    • A47L13/07—Metal sponges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR912774D 1941-07-23 1945-07-25 éponge métallique à double usage Expired FR912774A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US912744XA 1941-07-23 1941-07-23

Publications (1)

Publication Number Publication Date
FR912774A true FR912774A (fr) 1946-08-20

Family

ID=22226942

Family Applications (2)

Application Number Title Priority Date Filing Date
FR912774D Expired FR912774A (fr) 1941-07-23 1945-07-25 éponge métallique à double usage
FR912744D Expired FR912744A (fr) 1941-07-23 1945-07-25 écran de projection avec dispositif tendeur, notamment pour le cinéma

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR912744D Expired FR912744A (fr) 1941-07-23 1945-07-25 écran de projection avec dispositif tendeur, notamment pour le cinéma

Country Status (2)

Country Link
BE (1) BE457637A (enrdf_load_html_response)
FR (2) FR912774A (enrdf_load_html_response)

Also Published As

Publication number Publication date
FR912744A (fr) 1946-08-19
BE457637A (enrdf_load_html_response) 1944-10-31

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