US1608743A - Stencil sheet - Google Patents
Stencil sheet Download PDFInfo
- Publication number
- US1608743A US1608743A US21206A US2120625A US1608743A US 1608743 A US1608743 A US 1608743A US 21206 A US21206 A US 21206A US 2120625 A US2120625 A US 2120625A US 1608743 A US1608743 A US 1608743A
- Authority
- US
- United States
- Prior art keywords
- cellulose
- stencil sheet
- coating
- acetone
- impressible
- 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 - Lifetime
Links
- 239000011248 coating agent Substances 0.000 description 29
- 238000000576 coating method Methods 0.000 description 29
- 229920002678 cellulose Polymers 0.000 description 20
- 229940081735 acetylcellulose Drugs 0.000 description 19
- 229920002301 cellulose acetate Polymers 0.000 description 19
- 239000003795 chemical substances by application Substances 0.000 description 18
- 235000010980 cellulose Nutrition 0.000 description 17
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 16
- 239000001913 cellulose Substances 0.000 description 16
- -1 compound fatty esters Chemical class 0.000 description 14
- 239000002904 solvent Substances 0.000 description 14
- 238000005496 tempering Methods 0.000 description 12
- 239000000314 lubricant Substances 0.000 description 11
- 239000004359 castor oil Substances 0.000 description 10
- 235000019438 castor oil Nutrition 0.000 description 10
- 235000014113 dietary fatty acids Nutrition 0.000 description 10
- 150000002148 esters Chemical class 0.000 description 10
- 239000000194 fatty acid Substances 0.000 description 10
- 229930195729 fatty acid Natural products 0.000 description 10
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 10
- 239000000126 substance Substances 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- IPKKHRVROFYTEK-UHFFFAOYSA-N dipentyl phthalate Chemical compound CCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCC IPKKHRVROFYTEK-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 235000019198 oils Nutrition 0.000 description 6
- 230000000051 modifying effect Effects 0.000 description 5
- PCYQQSKDZQTOQG-NXEZZACHSA-N dibutyl (2r,3r)-2,3-dihydroxybutanedioate Chemical compound CCCCOC(=O)[C@H](O)[C@@H](O)C(=O)OCCCC PCYQQSKDZQTOQG-NXEZZACHSA-N 0.000 description 4
- 150000008282 halocarbons Chemical class 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
- 150000002790 naphthalenes Chemical class 0.000 description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 4
- ZQBAKBUEJOMQEX-UHFFFAOYSA-N phenyl salicylate Chemical compound OC1=CC=CC=C1C(=O)OC1=CC=CC=C1 ZQBAKBUEJOMQEX-UHFFFAOYSA-N 0.000 description 4
- 150000007519 polyprotic acids Polymers 0.000 description 4
- KMZHZAAOEWVPSE-UHFFFAOYSA-N 2,3-dihydroxypropyl acetate Chemical compound CC(=O)OCC(O)CO KMZHZAAOEWVPSE-UHFFFAOYSA-N 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 3
- RGCKGOZRHPZPFP-UHFFFAOYSA-N alizarin Chemical compound C1=CC=C2C(=O)C3=C(O)C(O)=CC=C3C(=O)C2=C1 RGCKGOZRHPZPFP-UHFFFAOYSA-N 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 150000002194 fatty esters Chemical class 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- DCYOBGZUOMKFPA-UHFFFAOYSA-N iron(2+);iron(3+);octadecacyanide Chemical compound [Fe+2].[Fe+2].[Fe+2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCYOBGZUOMKFPA-UHFFFAOYSA-N 0.000 description 3
- 229960003351 prussian blue Drugs 0.000 description 3
- 239000013225 prussian blue Substances 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- NKMZBGMEVYDZSR-UHFFFAOYSA-N 4-butoxy-2,3-dihydroxy-4-oxobutanoic acid Chemical class CCCCOC(=O)C(O)C(O)C(O)=O NKMZBGMEVYDZSR-UHFFFAOYSA-N 0.000 description 2
- MKRNVBXERAPZOP-UHFFFAOYSA-N Starch acetate Chemical compound O1C(CO)C(OC)C(O)C(O)C1OCC1C(OC2C(C(O)C(OC)C(CO)O2)OC(C)=O)C(O)C(O)C(OC2C(OC(C)C(O)C2O)CO)O1 MKRNVBXERAPZOP-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 229960000969 phenyl salicylate Drugs 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 2
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 2
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 1
- ZAMLGGRVTAXBHI-UHFFFAOYSA-N 3-(4-bromophenyl)-3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoic acid Chemical compound CC(C)(C)OC(=O)NC(CC(O)=O)C1=CC=C(Br)C=C1 ZAMLGGRVTAXBHI-UHFFFAOYSA-N 0.000 description 1
- 235000019489 Almond oil Nutrition 0.000 description 1
- 244000144725 Amygdalus communis Species 0.000 description 1
- 240000002791 Brassica napus Species 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 239000004348 Glyceryl diacetate Substances 0.000 description 1
- FZERHIULMFGESH-UHFFFAOYSA-N N-phenylacetamide Chemical compound CC(=O)NC1=CC=CC=C1 FZERHIULMFGESH-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 240000007817 Olea europaea Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 235000019483 Peanut oil Nutrition 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 239000008168 almond oil Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 235000019443 glyceryl diacetate Nutrition 0.000 description 1
- 239000001087 glyceryl triacetate Substances 0.000 description 1
- 235000013773 glyceryl triacetate Nutrition 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- JCZMXVGQBBATMY-UHFFFAOYSA-N nitro acetate Chemical class CC(=O)O[N+]([O-])=O JCZMXVGQBBATMY-UHFFFAOYSA-N 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 210000004722 stifle Anatomy 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000563 toxic property Toxicity 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/24—Stencils; Stencil materials; Carriers therefor
- B41N1/243—Stencils; Stencil materials; Carriers therefor characterised by the ink pervious sheet, e.g. yoshino paper
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249962—Void-containing component has a continuous matrix of fibers only [e.g., porous paper, etc.]
- Y10T428/249963—And a force disintegratable component [e.g., stencil sheet, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31844—Of natural gum, rosin, natural oil or lac
- Y10T428/31848—Next to cellulosic
- Y10T428/31851—Natural oil
Definitions
- This invention relates generally to typeimpressible stencil sheets suitable for use on the mimeograph or other stencil duplicating machine and particularly to that type of stencil sheet in which is employed an open porous base, such as yoshino, provided with a normally impervious coating in which characters may be formed by impact or pres sure, such as that of the type of a writing
- an open porous base such as yoshino
- a normally impervious coating in which characters may be formed by impact or pres sure, such as that of the type of a writing
- the coating whereof'includes a cellulose compound as, for example, a cellulose ester in a suitable solvent The present invention concerns an embodiment of this broad idea in a form with which gzod results may be obtained in practice.
- esters of cellulose are the nitrates and the acetates. It has been found that certain advantages inhere in the latter (in which I include other fatty esters or compound fatty esters of cellulose) as, for example, they are less inflammable and are non-explosive, for which reason they can be compounded more safely than the former with solvents of comparatively low infiammability. They may also be readily modified and softened to adapt them to the intended purpose. Stencil sheets of the so-called dry type, that is, not requiring moistening preliminarily to stencilizing the same, coated with suitably compounded cellulose acetate, operate well under the impact of the type and produce copies of excellent quality.
- acetone-soluble cellulose is that which scientifically is produced by the partial saponification of the directly acetylated product or so-called triacetate, while the acetone-insoluble material consists primarily of the product directly acetylated to the triacetate.
- the acetone-soluble compounds are, therefore, the so-called group Application filed April 6, 1925. Serial No. 21,206.
- cellulose fatty esters such as the nitro acetates, or esters made by the use of two or more fatty acids in union with the same ('ellulose molecule, would constitute fatty esters of cellulose which would no doubt yield colloidal homogeneous films capable of producing entirely satisfactory stencils.
- cellulose acetate in a suitable volatile solvent, such as acetone, a tempering agent or agents, one or more of which may be (wholly or in the main) a solvent of the cellulose acetate or may be characterized by substantial nonwolatility, in which case it will remain as a part of the coating mass.
- a tempering agent may have modifying properties or a distinct modifying agentmay be added in addition to a tempering agent.
- the tempering agent for the celluloseacetate colloid may be one of the following: the amyl and butyl tartrates and phthalates, monoacetin, triacetin and esters of gylcerin or of other polyhydric alcohols.
- tempering agents exert a solvent or gelatinizing effect on the cellulose acetate, and unite with the colloid to produce a homogeneous film.
- Modifiers are not solvents for the colloid but cause a homogeneous film when used with a mutual volatile solvent which is evaporated.
- the lubricant added to the coating is a special type of disten'der distinguished by the fact that it has lubricating properties.
- the function of a distender is to extend the homogeneous film.
- Some distenders possess definite lubricating properties; that is, establish inter-molecular lubrication.
- the non-lubricating distenders include Turkey red oil, bentonite, powdered soapstone and zinc oxide.
- the distenders which have definite lubricating properties include chlorinated naphthalene and other hydrocarbons,
- Castor oil arid zinc stearate are also lubri- .cants when used with cellulose acetate but lack this property when used with nitrocellulose.
- temperin or modifying agents an lubricatin' and distending agents on the other
- M invention may be practiced by the use of t e following formula, the proportions stated being approximate:
- esters of the higher "alcohols : which may be regarded as more powerful 'ifying and softening agents of the c ulose acetate the following formula may be employed:
- Another com to this mass is iamyl hthalate, and it may wholly or in part-rep ace the dibutyl tartrate 'm the formula given.
- the acetate of starch while not an absolutely essential constituent, nevertheless improves the qualractical purposes.
- Other higher alcoho s than amyl and butyl are no doubt suitable for the preparation of esters of the character of gneous'mass from which stencil sheets 7 dibutyl tartrate and diamyl phthalate and other polybasic acids than phthalic and tartaric will yield compounds which are applicable for the purpose.
- oils of similar properties such as rapeseed, olive, almond or peanut oil, may be used, in whole or in part, for the same urpose.
- the coloring ingredient may, 0 course, be varied widely; for example, the Prussian blue may be replaced by'lake colors or by d estufi's soluble in the mixture.
- Chlorina-te naphthalene is also a lubricant in the compositions referred to.
- Turkey red oil sulfonated castor oil
- the result will be a ion homogeneous, type-impressible, colloidal, coating substance capable of use throughout an extended period of time without moistening preliminarily to stencilizing.
- certainof the higher esters of cellulose may be solnble in a non-volatilesolvent. Where these are used. such solvent becomes a more or less permanent constituent of the coating compound which should be applied to the yoshino while at a somewhat elevated temperature -or, at least, a temperature sufficiently high to hold the cellulose ester in solution. After the coating operation the sheet may be hung for a sufficient time to attain a moisture balance, particularly Where a constituent having more or less hygroscopicity (n1onoacetin, for example) is employed.
- Such a iomparatively nonvolatile solvent for cellulose acetate is represented by ortlio-nitro-toluol, although be cause of its toxic properties, preference would naturally be given to another substance or other substances having the capacity of acting as a solvent of cellulose acetate.
- the higher alcohol esters of phthalic and tartaric acid either alone or when mixed with other substances and used in connection with a suitable cellulose ester, may form (outing masses which can be handled in this manner.
- a type-impressible stencil sheet comprising a porous base having a coating including a fatty acid ester of ccllulose,a lubricant and a tempering agent.
- a type-impressible stencil sheet comprising a porous base having a coating including a fatty acid ester of cellulose and a halogenated hydrocarbon.
- a type-impressible stencil sheet comprising a porous base having a coating including a fatty acid ester of cellulose, a
- a type-impressible stencil sheet comprising a porous base having a coating including a fatty acid ester of cellulose, a halogenated hydrocarbon and castor oil.
- a type-impressible stencil sheet comprising a porousbase having a coating including an acetone-soluble fatty acid ester of cellulose.
- a type-impressible stencil sheet comprising a porous base having a coating including an acetone-soluble fatty acid ester of cellulose and a lubricant.
- a type-impressible stencil sheet comprising a porous base having a coating including an acetone-soluble fatty acid ester of cellulose and a tempering agent.
- a t vpe-impressible stencil sheet comprising a porous base having a coating including an acetone-soluble fatty' acid ester of cellulose, a lubricant and a tempering agent.
- a type-impressible stencil sheet comprising a porous base having a coating including a fattyacid ester of cellulose and a higher-alcohol ester of a polybasic acid.
- a type-impressible stencil sheet comprising a porous base having a coating including cellulose acetate and a higher alco- 'hol ester of a polybasic acid.
- cellulose acetate including cellulose acetate, starch acetate and diamyl phthalate.
- a type-impressible stencil sheet comprising a porous base having a coating including cellulose acetate, a higher alcohol ester of a polybasic acid and a lubricant.
- a type-impressible stencil sheet comprising a porous base having a coating including cellulose acetate, an acetate of starch, dibutyl tartrate and castor oil.
- a type-impressible stencil sheet comprising a porous base having a coating including cellulose acetate, an acetate of starch, diamyl phthalate and castor oil.
- a type-impressible stencil sheet comprising a loose fibred base provided with a coating of glycerol fatty acid ester, phthalic acid ester, and a binding agent.
- a type-impressible stencil sheet comprising a porous base having a coating including cellulose acetate dissolved in acetone, phthalic acid ester, butyl tartrate, and a lubricant.
- a stencil sheet comprising a porous base having a coating including cellulose oleaiginouspla'stif ing, stabilizing and sof tening. a ents to orm therewith a homoge-.
- neous in -proof body which may be readil stenciled by the types of a typewriter.
- the homogeneous body also including a lubricating agent
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Printing Plates And Materials Therefor (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21206A US1608743A (en) | 1925-04-06 | 1925-04-06 | Stencil sheet |
| GB13799/25A GB261806A (en) | 1925-04-06 | 1925-05-26 | Improvements in or relating to stencil sheets |
| NL30362A NL19651C (forum.php) | 1925-04-06 | 1925-05-30 | |
| FR599112D FR599112A (fr) | 1925-04-06 | 1925-06-04 | Perfectionnements relatifs aux feuilles-clichés pour duplicateurs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21206A US1608743A (en) | 1925-04-06 | 1925-04-06 | Stencil sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1608743A true US1608743A (en) | 1926-11-30 |
Family
ID=21802941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US21206A Expired - Lifetime US1608743A (en) | 1925-04-06 | 1925-04-06 | Stencil sheet |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1608743A (forum.php) |
| FR (1) | FR599112A (forum.php) |
| GB (1) | GB261806A (forum.php) |
| NL (1) | NL19651C (forum.php) |
-
1925
- 1925-04-06 US US21206A patent/US1608743A/en not_active Expired - Lifetime
- 1925-05-26 GB GB13799/25A patent/GB261806A/en not_active Expired
- 1925-05-30 NL NL30362A patent/NL19651C/xx active
- 1925-06-04 FR FR599112D patent/FR599112A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR599112A (fr) | 1926-01-05 |
| NL19651C (forum.php) | 1929-04-15 |
| GB261806A (en) | 1926-11-26 |
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