U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.

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Class 111/28 - Revolving

Subclass of Class 111 - Planting
Definition: Wherein the marking device is a revolving member having
No. of patents: 0