05-13-2021, 02:22 PM
Designs for 1200mm f10.5/10.6, 800mm f5.1, 400mm f3.6, 2000mm f15, 1200mm f7.6. With optical image stabilisation.
https://pdfaiw.uspto.gov/.aiw?PageNum=0&...0210141240
https://pdfaiw.uspto.gov/.aiw?PageNum=0&...0210141240