3 ms·
It was known in 2006 but rediscovered recently: https://patents.google.com/patent/US20060281113A1/en https://patents.google.com/patent/US20060281113A1/en
by Metacelsus 8mo ago
It was known in 2006 but rediscovered recently: https://patents.google.com/patent/US20060281113A1/en https://patents.google.com/patent/US20060281113A1/en