Granted Patent
Utility
US 6,598,850
· Confirmation No. 3793
BUTTERFLY VALVE LOCKING APPARATUS
Inventor:
David W. Buchwald
Inventors
David W. Buchwald
Aurora, IL
Attorneys & Agents of Record
Classification
USPC
251/89
Prosecution
- Examiner
- HIRSCH, PAUL J
- Art Unit
- 3754
- Customer No.
- 20736
- Docket No.
- 84430
- Confirmation No.
- 3793
Publication
- Pub. No.
- US20020047101A1
- Pub. Date
- 2002-04-25
Patent Term Adjustment
-91days
RELEASE OF SECURITY INTEREST
Recorded 2018-06-20
AFFIDAVIT REGARDING TERMINATION OF PATENT AND TRADEMARK SECURITY INTERESTS
Recorded 2015-03-27
SECURITY AGREEMENT
Recorded 2014-12-02
SECURITY INTEREST
Recorded 2014-12-01
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded 2014-05-20
RELEASE OF SECURITY INTEREST
Recorded 2010-08-26
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENT RIGHTS (PREVIOUSLY RECORDED AT REEL 15478 FRAME 0979)
Recorded 2006-01-30
from
HENRY PRATT COMPANY
SECURITY AGREEMENT
Recorded 2005-10-12
from
HENRY PRATT COMPANY
SECURITY AGREEMENT
Recorded 2005-10-06
from
HENRY PRATT COMPANY
SECURITY INTEREST
Recorded 2004-06-24
from
HENRY PRATT COMPANY
SECURITY INTEREST
Recorded 2004-06-21
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Quick Facts
- Patent No.
- US 6,598,850
- App. No.
- 09/978,012
- Filed
- 2001-10-17
- Granted
- 2003-07-29
- Pub. No.
- US20020047101A1
- Examiner
- HIRSCH, PAUL J
- Art Unit
- 3754
- PTA
- -91 days
External Links