Derek Ronald Gramstad

Person

Owatonna, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Integrated casement window operator and lock
- Patent number 10,221,607
- Issue date Mar 5, 2019
- Truth Hardware Corporation
- Derek Ronald Gramstad
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Self-sealing butt hinge
- Patent number 9,617,782
- Issue date Apr 11, 2017
- Truth Hardware Corporation
- Derek Ronald Gramstad
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Casement and awning window opening limit device
- Patent number 9,428,945
- Issue date Aug 30, 2016
- Truth Hardware Corporation
- Nghi Christopher Nguyen
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Low profile high performance casement and awning window keeper
- Patent number 9,181,746
- Issue date Nov 10, 2015
- Truth Hardware Corporation
- Nghi Christopher Nguyen
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Casement and awning window opening limit device
- Patent number 8,813,424
- Issue date Aug 26, 2014
- Truth Hardware Corporation
- Nghi Christopher Nguyen
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Casement and awning window opening limit device
- Patent number 8,505,240
- Issue date Aug 13, 2013
- Truth Hardware Corporation
- Nghi Christopher Nguyen
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Window with opening control mechanism
- Patent number 8,418,404
- Issue date Apr 16, 2013
- Andersen Corporation
- Derek Gramstad
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
INTEGRATED CASEMENT WINDOW OPERATOR AND LOCK
- Publication number 20170198512
- Publication date Jul 13, 2017
- Truth Hardware Corporation
- Derek Ronald Gramstad
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
AROUND-THE-CORNER MULTI-POINT WINDOW LOCK MECHANISM FOR CASEMENT AN...
- Publication number 20160130847
- Publication date May 12, 2016
- Truth Hardware Corporation
- Derek Ronald Gramstad
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
SELF-SEALING BUTT HINGE
- Publication number 20160040463
- Publication date Feb 11, 2016
- Truth Hardware Corporation
- Derek Ronald Gramstad
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
CASEMENT AND AWNING WINDOW OPENING LIMIT DEVICE
- Publication number 20140325914
- Publication date Nov 6, 2014
- Truth Hardware Corporation
- Nghi Christopher Nguyen
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
CASEMENT AND AWNING WINDOW OPENING LIMIT DEVICE
- Publication number 20140000171
- Publication date Jan 2, 2014
- Truth Hardware Corporation
- Nghi Christopher Nguyen
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Window with Opening Control Mechanism
- Publication number 20120036781
- Publication date Feb 16, 2012
- David RUNK
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
CASEMENT AND AWNING WINDOW OPENING LIMIT DEVICE
- Publication number 20110203184
- Publication date Aug 25, 2011
- Nghi Christopher Nguyen
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Derek Ronald Gramstad

Person

Patents Grantslast 30 patents

Integrated casement window operator and lock

Self-sealing butt hinge

Casement and awning window opening limit device

Low profile high performance casement and awning window keeper

Casement and awning window opening limit device

Casement and awning window opening limit device

Window with opening control mechanism

Patents Applicationslast 30 patents

INTEGRATED CASEMENT WINDOW OPERATOR AND LOCK

AROUND-THE-CORNER MULTI-POINT WINDOW LOCK MECHANISM FOR CASEMENT AN...

SELF-SEALING BUTT HINGE

CASEMENT AND AWNING WINDOW OPENING LIMIT DEVICE

CASEMENT AND AWNING WINDOW OPENING LIMIT DEVICE

Window with Opening Control Mechanism

CASEMENT AND AWNING WINDOW OPENING LIMIT DEVICE