Door knob screw alignment sleeve
US11933344B2 · kind B2 · utility
0Cited by
6References
21Claims
0Family size
Inventor
Key dates
| Filing date | Jan 8, 2021 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | Nov 27, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B5/0258
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flexible compressible screw guide sleeve that facilitates door knob installations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.