The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 1978
Filed:
Dec. 17, 1976
Raymond J Grohoski, Watertown, CT (US);
Harwell B Thompson, Cheshire, CT (US);
Timex Corporation, Waterbury, CT (US);
Abstract
In a timepiece, a supplementary watch crystal is mounted over the regular watch crystal so as to be manually rotatable with respect to the regular watch crystal. The supplementary watch crystal may then be provided with special marking indicia or constructed of special material to achieve special visual effects when used in conjunction with other devices in a timepiece such as a rotatable bezel ring or rotatable 'seconds' disc with markings thereon. Modified forms of the invention include a bezel extension formed on the supplementary crystal, or a second supplementary crystal mounted on the first supplementary crystal. The supplementary crystal is preferably mounted by an inner circumferential lip on the supplementary crystal disposed in an outer circumferential groove on the regular watch crystal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile