David Workman

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Carlsbad, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Portable sliding door securement device
- Patent number 12,031,358
- Issue date Jul 9, 2024
- David Workman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Portable door securement device
- Patent number 11,203,889
- Issue date Dec 21, 2021
- David Workman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Portable door securement device
- Patent number 10,435,928
- Issue date Oct 8, 2019
- David Workman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Portable Sliding Door Securement Device
- Publication number 20220145667
- Publication date May 12, 2022
- David Workman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Portable Door Securement Device
- Publication number 20200040624
- Publication date Feb 6, 2020
- David Workman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Portable Door Securement Device
- Publication number 20190010743
- Publication date Jan 10, 2019
- David Workman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES