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Patents > Office: Other & National tech categories: FR 5.8 & Number of text pages: 2-6

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Tech fields:
motors (23) · propulsion (12) · internal combustion (9) · airplane (9) · motor (6) · aerostat (6) · LTA (6) · cylinders (6) · engine (5) · pistons (5) · marine (4) · engines (3) · cooling (3) · control (3) · subsystem (3) · aerodynamics (3)
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IPCs:
IPC F01L1/04 (5) · IPC B64C11/04 (5) · IPC H02K21/42 (4) · IPC F02B57/08 (4) · IPC F02M1/00 (3) · IPC F02B75/26 (3) · IPC B64C11/00 (3) · IPC F03D3/06 (2) · IPC F03B9/00 (2) · IPC F02B75/22 (2) · IPC F16J9/06 (2)
CPCs:
CPC F01L1/04 (5) · CPC H02K21/42 (5) · CPC B64C11/04 (5) · CPC F02B57/08 (4) · CPC B64C11/006 (3) · CPC F02M1/00 (3) · CPC Y02T10/12 (2) · CPC Y02E10/20 (2) · CPC F16J9/06 (2) · CPC F05B2260/72 (2) · CPC F03D3/067 (2) · CPC F03B17/066 (2) · CPC F02M2700/4392 (2) · CPC F02B75/26 (2)
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