Granted Patent
Utility
US 6,637,981
· Confirmation No. 2334
RETAINING WALL BLOCK SYSTEM AND METHOD WITH VARYING BLOCK FACE SIZES
Inventor:
Robert A. MacDonald
|
⬇ PDF
|
Code | Description | Pages | ||
|---|---|---|---|---|---|
| 2003-07-30 | IFEE |
Issue Fee Payment (PTO-85B) | 1 | View | |
| 2003-07-30 | LET. |
Miscellaneous Incoming Letter | 2 | View | |
| 2002-08-15 | TRNA |
Transmittal of New Application | 3 | View | |
| 2002-08-15 | A.PE |
Preliminary Amendment | 18 | View | |
| 2002-08-15 | SPEC |
Specification | 18 | View | |
| 2002-08-15 | CLM |
Claims | 9 | View | |
| 2002-08-15 | ABST |
Abstract | 1 | View | |
| 2002-08-15 | DRW |
Drawings-only black and white line drawings | 8 | View | |
| 2002-08-15 | OATH |
Oath or Declaration filed | 2 | View |
Inventors
Robert A. MacDonald
Plymouth, MN
Attorneys & Agents of Record
Classification
USPC
405/284
E02D29/02
E02D29/0266
E04B2002/0245
E04B2002/0265
E04C1/395
Prosecution
- Examiner
- LEE, JONG SUK
- Art Unit
- 3673
- Customer No.
- 9561
- Docket No.
- KEY1017USD2
- Confirmation No.
- 2334
Publication
- Pub. No.
- US20020192035A1
- Pub. Date
- 2002-12-19
Patent Term Adjustment
0days
Parent
is a Division of
→
App. 09/652,566
· US 6,447,213
Filed 2000-08-31
· Patented Case
Parent
is a Division of
→
App. 09/248,435
· US 6,149,352
Filed 1999-02-11
· Patented Case
Child
is a Continuation of
→
App. 10/996,208
· US 7,011,474
Filed 2004-11-23
· Patented Case
Child
is a Continuation of
→
App. 10/601,051
· US 6,893,192
Filed 2003-06-20
· Patented Case
SECURITY INTEREST
Recorded 2016-12-08
RELEASE OF SECURITY INTEREST
Recorded 2016-12-02
RELEASE OF SECURITY INTEREST
Recorded 2016-11-28
from
MACDONALD, ROBERT A.
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded 2016-11-14
CONTECH ENGINEERED SOLUTIONS LLC (F/K/A CONTECH CONSTRUCTION PRODUCTS INC.),
KEYSTONE RETAINING WALL SYSTEMS LLC (F/K/A KEYSTONE RETAINING WALL SYSTEMS INC.),
CONTECH TRUCKING & LOGISTICS, LLC
RELEASE OF SECURITY INTEREST
Recorded 2013-08-07
NOTICE OF GRANT OF SECURITY INTEREST IN PATENTS
Recorded 2013-06-18
CERTIFICATE OF CONVERSION
Recorded 2012-02-03
from
ALLIANCE CONSTRUCTION PRODUCTS INC.,
ARMORTEC, LLC,
CDS TECHNOLOGIES, INC.,
CONTECH BRIDGE SOLUTIONS INC.,
CONTECH CONSTRUCTION PRODUCTS, INC.,
CONTECH EARCH STABILIZATION SOLUTIONS INC.,
CONTECH STORMWATER SOLUTIONS INC.,
CONTECH TECHNOLOGIES, LLC,
CONTECH TRUCKING & LOGISTICS, LLC,
KEYSTONE RETAINING WALL SYSTEMS, INC.,
SAFETY PRECAST, INC.,
SUPERIOR DRAINAGE, LLC,
THOMPSON CULVERT COMPANY,
WEST TEXAS CULVERTS, INC.
SECURITY AGREEMENT
Recorded 2010-09-22
TERMINATION OF SECURITY INTEREST IN PATENTS
Recorded 2006-02-03
NOTICE OF GRANT OF SECURITY INTEREST
Recorded 2005-02-14
NOTICE OF GRANT OF SECURITY INTEREST
Recorded 2003-12-11
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 6,637,981
- App. No.
- 10/219,790
- Filed
- 2002-08-15
- Granted
- 2003-10-28
- Pub. No.
- US20020192035A1
- Examiner
- LEE, JONG SUK
- Art Unit
- 3673
- PTA
- 0 days
External Links