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- Patents > 2012-04-26 > SECTION G PHYSICS
- CHECKING-DEVICES (1)
- COMPUTING; CALCULATING; COUNTING (1,000)
- CONTROLLING; REGULATING (60)
- EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS (81)
- HOROLOGY (2)
- INFORMATION STORAGE (66)
- MEASURING; TESTING (244)
- MUSICAL INSTRUMENTS; ACOUSTICS (28)
- NUCLEAR PHYSICS; NUCLEAR ENGINEERING (13)
- OPTICS (109)
- PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY (88)
- SIGNALLING (26)