4. Miscellaneous active electrical nonlinear devices, circuits, and
  5. Specific identifiable device, circuit, or system
  6. Nonlinear amplifying circuit

Allen J. Lindfors

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Charge amplifier for blast gauges

Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Nonlinear amplifying circuit
Patent

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Method and apparatus for perforating a well

Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1683179

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