 Every line and letter (signatures included) must be absolutely black. This direction applies to all lines, however fine, to shading, and to lines representing cut surfaces in sectional views. All lines must be clean, sharp, and solid, and they must not...  Patent and Trade Mark Review - 104. lappuse1916Pilnskats - Par šo grāmatu
 | United States. Patent and Trademark Office - 1989 - 52 lapas
...sectional views. All lines must be clean, sharp, and solid. Fine or crowded lines should be avoided. Solid black should not be used for sectional or surface...should be avoided wherever it is possible to do so. (d) Hatching and Shading. (1) Hatching should be made by oblique parallel lines spaced sufficiently... | |
 | DIANE Publishing Company - 1994 - 52 lapas
...sectional views. All lines must be clean, sharp, and solid. Fine or crowded lines should be avoided. Solid black should not be used for sectional or surface...should be avoided wherever it is possible to do so. (d) Hatching and shading. (1) Hatching should be made by oblique parallel lines spaced sufficiently... | |
 | United States - 1959 - 894 lapas
...sectional views. All lines must be clean, sharp, and solid, and fine or crowded lines should be avoided. Solid black should not be used for sectional or surface...should be avoided wherever it is possible to do so. (d) Hatching and shading. Hatching should be made by oblique parallel lines, which may be not less... | |
 | 1972 - 184 lapas
...black. This direction applies to all lines, however fine, and to shading. All lines must be clean, sharp, and solid, and they must not be too fine or...crowded. Surface shading, when used, should be open. The requirements of this paragraph are not necessary in the case of drawings permitted and filed in... | |
 | 1967 - 218 lapas
...black. This direction applies to all lines, however fine, and to shading. All lines must be clean, sharp, and solid, and they must not be too fine or...crowded. Surface shading, when used, should be open. The requirements of this paragraph are not necessary in the case of drawings permitted and filed in... | |
 | 1970 - 218 lapas
...black. This direction applies to all lines, however fine, and to shading. All lines must be clean, sharp, and solid, and they must not be too fine or...crowded. Surface shading, when used, should be open. The requirements of this paragraph are not necessary in the case of drawings permitted and filed in... | |
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