Expert.—One who is trained or is skilful, due to learning and practice.
Experiment.—(1) To find out an effect, or the cause of it by trials and tests. (2) To work out a process for the purpose of developing an idea. (3) To show the effect of some previous discovery or invention.
Files.—Patents that are arranged systematically for easy reference.
Fixture.—See [Jig].
Free-hand Drawing.—See [Drawing, Free-hand].
Full paid.—Stock that has been paid for either in cash or by a patented invention.
High Frequency Oscillations.—(1) Electric oscillations. (2) Electric currents which alternate in direction 100,000 or more a second.
Idea, Raw.—The first idea that comes into the mind as a basis for an invention.
Improvement.—(1) Adding a new element or part to a composition, device or a machine. (2) An improvement constitutes an invention and can be patented.
Impulse.—A turbine wheel turned by steam forced against its blades.