Stumbled upon this interesting Parker envelope
Juan H. Kipp was registered as an importer of "Machinery and Agricultural Implements" in 1891
https://archive.org/stream/bulletin07repugoog#page/n289
A needlessly condescending English gun dealer once referred to Smith guns as "farm implements". I've never seen the term "agricultural implements" applied to Parkers
See The L.C. Smith "Farm Implement Grades",
Double Gun Journal, 2014, page 113.