David Farrell — 13 Patents at Rtr Technologies

David Farrell has been granted 13 US patents while listed as an inventor at Rtr Technologies. The first was granted in 2014 and the most recent in February 2025. David Farrell ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list David Farrell in Loveland, CO, US.

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Showing 1–13 of 13 patents

Patent #	Title	Co-Inventors	Date
12216219	Radio frequency (RF) ranging in propagation limited RF environments utilizing aerial vehicles	Thomas Pattison	2025-02-04
12105187	Dual frequency ranging with calculated integer wavelength delays in RF environments	Thomas Pattison	2024-10-01
11971492	Radio frequency (RF) ranging in propagation limited RF environments utilizing aerial vehicles	Thomas Pattison	2024-04-30
11719806	Dual frequency ranging with calculated integer wavelength delays in RF environments	Thomas Pattison	2023-08-08
11693127	Radio frequency (RF) ranging in propagation limited RF environments utilizing aerial vehicles	Thomas Pattison	2023-07-04
11275181	Radio frequency (RF) ranging in propagation limited RF environments utilizing aerial vehicles	Thomas Pattison	2022-03-15
11035947	Radio frequency (RF) ranging in propagation limited RF environments	Thomas Pattison	2021-06-15
10101435	Radio frequency (RF) ranging in RF-opaque environments	Thomas Pattison	2018-10-16
9816267	Masonry block with continuously curved surfaces	—	2017-11-14
9617776	Motor driven door assembly	Robert J. Farrell	2017-04-11
9458661	Sliding door with tortuous leading edge path	Herbert Todd Ferrence	2016-10-04
9183957	Masonry block with continuously curved surfaces	—	2015-11-10
8627601	Rotating radiation shielded entrance assembly	—	2014-01-14

David Farrell — 13 Patents

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