Photographic lens barrel assembly
Patent 4596454 Issued on June 24, 1986. Estimated Expiration Date: 
September 15, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 15, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3433889 Circuit board arrangement for collapsible camera apparatus Lens assembly coupling device for camera system Interchangeable lens barrel Patent #: 4416526 InventorsAssigneeApplicationNo. 06/532583 filed on 09/15/1983US Classes:396/532, Having electrical contact detail396/542Having printed circuit detailExaminersPrimary: Gellner, Michael L.Attorney, Agent or FirmInternational ClassesG03B 17/14 (20060101)G03B 17/12 (20060101) H05K 1/11 (20060101) Foreign Application Priority Data1982-09-21 JPAbstractAn electrical signal transmission arrangement in a photographic lens barrel which is principally composed of an adapter member arranged to be non-rotatably carried by a camera body and a lens body arranged to be rotatable around an optical axis relative to the adapter member and which is equipped for electrical signal transmission between the adapter member and the lens body.Other References
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