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App. No. 18/521,670 · Confirmation No. 9751

RESPIRATORY PROTECTIVE DEVICES AND METHODS OF ASSEMBLING THE SAME USING ULTRASONIC WELDING

Inventors: Hang TIAN, En Yi CHEN
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2026-06-26 CTNF Non-Final Rejection 15 View
2026-06-26 892 List of references cited by examiner 1 View
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2025-07-08 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
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2023-11-28 SPEC Specification 33 View
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Quick Facts
App. No.
18/521,670
Filed
2023-11-28
Pub. No.
US20240198143A1
Art Unit
3785