Inventor
DUBIEL DAVID
US28 patents
⚠️ This page may combine multiple inventors who share the name “DUBIEL DAVID”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHAPIN MFG INC
25 patentsUSD850495SJun 4, 2019
Dosing cap
CHAPIN MFG INC10 citations84
USD902349SNov 17, 2020
Backpack sprayer with internal pump
CHAPIN MFG INC11 citations83
USD855420SAug 6, 2019
Irrigation injector
CHAPIN MFG INC6 citations82
USD853446SJul 9, 2019
Controlled-release spreader
CHAPIN MFG INC7 citations82
US11207708B2Dec 28, 2021
Handheld fluid applicator
CHAPIN MFG INC2 citations73
US10596530B2Mar 24, 2020
Variable venturi device with adjustable valve stem
CHAPIN MFG INC3 citations73
US10766046B2Sep 8, 2020
Mix on demand smart backpack sprayer with removable concentrate tank
CHAPIN MFG INC5 citations72
US10639657B2May 5, 2020
Mix on demand smart backpack sprayer
CHAPIN MFG INC5 citations72
USD877291SMar 3, 2020
Diluent tank for a sprayer
CHAPIN MFG INC3 citations72
USD870850SDec 24, 2019
Concentrate tank for a sprayer
CHAPIN MFG INC4 citations72
US10413922B2Sep 17, 2019
Mix on demand sprayer with external by-pass circuit
CHAPIN MFG INC5 citations72
USD973840SDec 27, 2022
Dual chamber backpack sprayer
CHAPIN MFG INC5 citations71
US10864538B2Dec 15, 2020
Dual chamber backpack sprayer
CHAPIN MFG INC6 citations71
US10639659B1May 5, 2020
Backpack sprayer with internal pump
CHAPIN MFG INC4 citations71
US10625284B1Apr 21, 2020
Modular frame for a backpack sprayer
CHAPIN MFG INC5 citations71
US10088059B2Oct 2, 2018
Spreader with rotary slide gate
CHAPIN MFG INC3 citations71
US10994294B2May 4, 2021
Backpack sprayer with selectable internal pump
CHAPIN MFG INC5 citations70
US10472139B2Nov 12, 2019
Dosing cap and system and method of using same
CHAPIN MFG INC3 citations67
US10736263B2Aug 11, 2020
Controlled-release spreader
CHAPIN MFG INC4 citations65
US10786788B2Sep 29, 2020
Fluid injection system with fertigation basket
CHAPIN MFG INC1 citations61
USD849490SMay 28, 2019
Irrigation injector
CHAPIN MFG INC1 citations61
USD902347SNov 17, 2020
Modular frame for a backpack sprayer
CHAPIN MFG INC1 citations60
US10464087B2Nov 5, 2019
Mix on demand sprayer
CHAPIN MFG INC1 citations58
US10850240B2Dec 1, 2020
Fluid injection system
CHAPIN MFG INC0 citations50
USD816721SMay 1, 2018
Dual slide gate for spreader
CHAPIN MFG INC0 citations50