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US Patent system is obviously broken. They granted a patent for two-wire coin collector 1981, while Swedish LM Ericsson had such in production since 1960s. All
by timonoko 5y ago
US Patent system is obviously broken. They granted a patent for two-wire coin collector 1981, while Swedish LM Ericsson had such in production since 1960s. All coin telephones in Nordic countries were like that in 1970s.
- timonoko 5y agoOuch I actually read the patent. It is a modification of existing system for long wires, where high current pulse is not feasible. Energy is slowly collected to a capacitor and triggered with a tone signal. -- So I was totally wrong this time, but US Patent System still sucks.