IP Library › Granted Patent US 840,055
Granted Patent S1
US 840,055 · App. 29/633,324 · Granted Feb 5, 2019

Step ladder

Inventors: Jeff D. Skubic (Eden Prairie, MN); Dennis D. Simpson (Plymouth, MN); Benjamin P. Williams (Chaska, MN); Yongxue Lu (Shanghai, CN)
Assignee: Tricam Industries, Inc.
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 840,055
App. No.
29/633,324
Granted
Feb 5, 2019
Kind
S1
Claims (1)

We claim the ornamental design for step ladder, as shown and described.

Assignments (3)
CERTIFICATE OF CONVERSION Recorded Feb 6, 2025
From: TRICAM INDUSTRIES, INC.
To: TRICAM INDUSTRIES, LLC
Reel/Frame 070144/0480 →
SECURITY INTEREST Recorded Feb 2, 2025
From: TRICAM INDUSTRIES, LLC
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 070082/0930 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 5, 2018
From: SKUBIC, JEFF; SIMPSON, DENNIS; WILLIAMS, BEN; LU, YONGXUE
To: TRICAM INDUSTRIES, INC.
Reel/Frame 047409/0361 →
Continuity (1)
Continuation 14617441 · Feb 9, 2015