dude, they sold china patriot missle tech in the early 90's
They were going to sell them unmanned drones which were developed by the United States and then backed out of the deal because of pressure from us
and the China j-10 fighter when it was being produced was almost an exact replica of the f-16
Wrong on all counts. They were accused of selling Patriot missile data, not technology - in other words, how effective was it not how does it work. The drones contained some US technology but were not developed by the US and the US technology they did contain was not restricted; the US objected to the improvements Israel had added to the drones. The Chinese f 10 is thought to be based on the Israeli developed lavi fighter bomber, not the US f 16, which was largely financed by the US but which was never produced in part because the US had second thoughts about competing with it world wide and pressured Israel to drop it.
sigh
The lavi fighter was manufactured by the Israeli's however it was funded by the US government and the Lavi was based off the F-16 design. After it was dropped the lavi plans were sold to China which also included American secret tech in it based from the F-16.
If Israel Sold Patriot Secrets . . . - New York Times
Israel, of course, has the know-how to produce advanced weapons on its own. It sells many of them to China and other nations to offset the costs of defending itself. But installing U.S. components in such exports would violate its obligations.
So would reverse engineering -- taking a U.S. weapon apart to discover its design secrets and then making a copy for sale to others.
Take the Israeli-built Python-3 air-to-air missile. To some U.S. officials it looks suspiciously like a knock-off of an American design, the heat-seeking AIM-9L Sidewinder. Others are persuaded that the Israelis designed it themselves.
Israel sold the Python-3 to China. China in turn designed its own version, called the PL-8, and sold some to Iraq. The Israeli version uses American parts, which it buys with U.S. military aid. But Israel contends it replaced those parts in the version exported to China -- a claim accepted by some U.S. officials. The same U.S. officials don't think that's the case with Patriot technology.
Even when Israel has clearly violated U.S. export controls, American officials have declined to crack down. In a notorious case last fall, an Israeli-owned company exported American ballistic missile components to a South African company and used them in its own Jericho-2 missile.