Most likely, Virginia. There were no patents or other restrictions against selling anything you wished to add to your catalog. The only way to restrict something so it was exclusive was to not release any material from it.

the yellow one

Not from that photo that you posted of the plant now, it is way gone, no green, no plant. You can try a search at Helpmefind.com yourself. Go to the link below. Click on the "Advanced Search" tab at the top of the page. click on "Class" then check the box next to "Hybrid Tea / Large-Flowered" then click the "Continue" button. Then, click "Bloom" and check the box next to "yellow blend [yb]", and "Continue". Then click the "Search" button on the right side. This brings up a list of roses matching those traits. You can click on each (there are a LOT) to see if there is a photo that matches. You can repeat the search but under "Bloom" check off "medium yellow [my]" or "Deep yellow [dy]" instead. Here is a link that might be useful: Search at Helpmefind.com

Yes, I agree that the first two are roses, and the last two are not. What I would do first is weed out EVERYTHING within, say 25 inches of the base of each rose. The first picture appears to be a rose about to be strangled by bind weed! Take that viny thing out, along with anything else growing there, including grass. Then put down mulch on the now bare dirt in the area you weeded. Sprinkle on some Preen, or similar "pre emergent" product over the area where you put the mulch (it is a chemical which will not hurt growing plants, but prevents seeds (like weed seeds) from germinating. Then in your area, I think you need to WAIT until "all danger of frost has passed". After that in the Spring you can prune what appear to me to be hybrid tea roses. Cut off any dead canes or part of canes. If there are dead "stumps" of old canes at the bottom (where someone was too lazy to take the canes off all the way down - I see this a LOT), take a pruning saw and cut them off level with the top edge of the bottom round lumpy thing the canes are coming out of, which is called the bud union - on grafted roses it is where the top scion rose is grafted to the bottom root rose. Then, you are supposed to take out any diseased canes or part of canes, and "open up" the rose by cutting out any canes which are going cross wise and rubbing on other canes. You want to end up with a bunch of canes which are sort of spread out like a 3 dimensional fan. On the canes, there will be little bumps called "bud eyes". This is where new growth will come when you cut the cane. So, make sure your cuts are above bud eyes which are pointing towards the OUTSIDE of the bush, not the inside. You do not want new canes to grow towards the inside of the bush. Do not take off more than a total of 1/3rd of the live growth. Don't worry about how to do it exactly - roses are very forgiving. Then get some rose food and feed it following the directions, and stand back. It would also be helpful to locate your local Rose Society and attend a meeting. Rose people are very friendly, and will be happy to give you advice. Jackie