Granted Patent
Utility
PCT National Stage
US 6,564,520
· Confirmation No. 8928
SHEET-LIKE MASONRY BLOCK DRAINAGE SYSTEM
Patented Case
View Patent ↗
Inventors
Donald A. Starke
Golden, CO
John A. Striednig
Valley Park, CO
Keith R. Bartlett
Rowley, MA
Robert F. Jenkins
Wakefield, MA
Attorneys & Agents of Record
Classification
USPC
52/302.1
E02D29/0266
E04B1/70
E02D31/02
E02D2600/20
Prosecution
- Examiner
- KATCHEVES, BASIL S
- Art Unit
- 3635
- Docket No.
- L366302
- Confirmation No.
- 8928
Patent Term Adjustment
0days
RELEASE OF SECURITY AGREEMENT RECORDED AT REEL/FRAME NO.: 032159/0384
Recorded 2018-04-03
CORRECTIVE ASSIGNMENT TO CORRECT THE APPLICATION NUMBER 13353676 PREVIOUSLY RECORDED ON REEL 037701 FRAME 0396. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT.
Recorded 2016-03-17
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded 2016-02-05
SECURITY AGREEMENT
Recorded 2014-02-04
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded 2001-09-07
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 application's details
Quick Facts
- Patent No.
- US 6,564,520
- App. No.
- 09/869,821
- Filed
- 2001-09-06
- Effective Filing
- 2001-07-05
- Granted
- 2003-05-20
- Examiner
- KATCHEVES, BASIL S
- Art Unit
- 3635
- PTA
- 0 days
External Links