IP Library › Granted Patent US 550,351
Granted Patent S1
US 550,351 · App. 29/197,399 · Granted Sep 4, 2007

Elastic gas washout vent for a respiratory mask

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 550,351
App. No.
29/197,399
Granted
Sep 4, 2007
Kind
S1
Claims (1)

The ornamental design for an “elastic gas washout vent for a respiratory mask”, as shown and described.

Assignments (3)
CHANGE OF NAME Recorded Apr 30, 2019
From: RESMED LIMITED
To: RESMED PTY LTD
Reel/Frame 050005/0461 →
CHANGE OF ASSIGNEE'S ADDRESS Recorded Jun 29, 2007
From: RESMED LIMITED
To: RESMED LIMITED
Reel/Frame 019531/0558 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 30, 2004
From: KWOK, PHILIP RODNEY; LITHGOW, PERRY DAVID
To: RESMED LIMITED
Reel/Frame 015843/0624 →