4. Boots, shoes, and leggings

Frederick Martin

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Narrow bandpass reflective optical filter

Optical: systems and elements – Absorption filter – Fluid
Patent

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Non-imaging optical detector with variable field-view

Optics: measuring and testing – Miscellaneous
Patent

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Secure two-way communications with submerged submarines

Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent

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System for analyzing laser beam profiles

Boots – shoes – and leggings
Patent

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Tracking telescope using an atomic resonance filter

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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Profile ID: LFUS-PAI-P-455476

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