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- Patents > 2009-07-30 > SECTION G PHYSICS
- CHECKING-DEVICES (7)
- COMPUTING; CALCULATING; COUNTING (884)
- CONTROLLING; REGULATING (42)
- EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS (70)
- HOROLOGY (4)
- INFORMATION STORAGE (100)
- MEASURING; TESTING (233)
- MUSICAL INSTRUMENTS; ACOUSTICS (31)
- NUCLEAR PHYSICS; NUCLEAR ENGINEERING (7)
- OPTICS (114)
- PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY (116)
- SIGNALLING (41)