I believe your discussion could use some pictures.
Schrade USA maufactured all of these knives during the 1970's. They are essentially the same frame at 3 5/16" closed length, with three blades. They featured a clip, sheepsfoot and spey blade. This is typical of a Schrade junior stockman pattern from this time frame. The Open Stock and Old Timer have carbon steel blades, the Uncle Henry has stainless steel blades. The Uncle Henry version started sometime in the 1970s, the Old Timer in the 1960's, but the Open Stock pattern dates back to the 1920's. This was a very popular pattern for Schrade during their long span of existence.

Schrade Uncle Henry 834UH - 3 5/16" Stockman - Staglon (imitation Delrin stag) handles

Schrade NY 834 Open Stock - 3 5/16" stockman - Jigged Delrin handles

Schrade NY 34OT Stockman - 3 5/16" stockman - Sawcut Delrin handles
Schrade also made these with both black Delrin (834B), and yellow Delrin (834Y). As mentioned earlier, the pattern was produced way back into the 1920's with bone stag handles as a Schrade Cut Co, and into the 1940's, 50's, and 60's as a Schrade Walden. There are variations with different blades, some with a punch. These variations will have a similar pattern number usually ending with a different digit, like 832, 833, 835. The Cut Co examples will be four numbers.
Here a a couple of variations to add to the bunch. Both with pen blades.

A Keen Kutter made by Schrade with rough black (833), and a Schrade Walden NY 834 (old 8343) in bone stag
The 8OT, 885UH and 881, all are 4" stockman patterns, again were offered as Old Timer, Uncle Henry, and Open Stock. They are similar in style, blade selection, and features as the 834, except they are all built on a 4" frame instead of 3 5/16".
Winchester73 - In your original post you mentioned your 834 and a trapper pattern. That would be the 293 (Open Stock) and probably a 94OT (Old Timer) the 285UH (Uncle Henry). Their numbering was not as consistent in the trapper pattern. These were all 3 7/8" trappers with a clip and long spey. You will find that many of the Old Timers and Uncle Henry knives existed first as a traditional Open Stock pattern.