Hidden image system.

申请公布号：EP0261780(A2)

申请号：EP19870306941

申请日期：1987.08.05

申请公布日期：1988.03.30

申请人：

MINNESOTA MINING AND MANUFACTURING COMPANY

发明人：RELYEA, KEITH E. MINNESOTA MINING AND

分类号：B41M5/124;A63F3/06

主分类号：B41M5/124

摘要：<p>A sheet is provided which upon abrasion of one surface will reveal a preprinted message without removal of an opaque cover layer.</p>

THERMOREACTIVE MOULDING SANDS, METHOD FOR MANUFACTURING THEM AND PRODUCTS FOR PROCESSING THE SAME

PROCESS FOR CULTIVATING PLANTS IN A BIOACTIVE MULCH COMPRISING PROTECTIVE CRUCIFEROUS CROPS

STERILE DRESSING IMPREGNATED WITH TRIGLYCERIDES AND AG-DOPED ZNO NANOPARTICLES, RECIPE AND PROCESS FOR PREPARING THE HYDROCOLLOID WITH TRIGLYCERIDES WITH AG-DOPED ZNO NANOPARTICLES AND PROCESS FOR MANUFACTURING THE STERILE DRESSING

KNIFE FOR CHOROIDECTOMIY

Device for driving labels in wood

Heating head

The manner and device for sprinkling of loose materials

Method of purification of 3-(4-methoxy-1-naphthoyl) propionic acid

Tool for measurement of diameters and lengths

Multi-position device for thermal processing of food

The manner of excretion of catalytic agent from oxyethylene products

Microwave directional coupler with strong coupling

Cement-mineral blend destructing living organisms

New chiral (+)-(1R)-1-[(1S, 5R,)-(6,6-dimethylbicyclo[3.1.0]hex-2-en-2-yl)]ethanol and method of its manufacturing

New derivative of linalol and the manner of obtaining it

Mixer of solid fuels

Corner gutter joint

Gutter connector for mining scraping conveyor

Process for rearing pike-perch fry

OIL DEGUMMING METHODS.