A47C 23/0507
Using tensioned spiral springs
Official title: {using tensioned spiral springs}
A47C23/0507 (Using tensioned spiral springs) appears on 4 US grants and 5 published applications in this corpus.
Search patents in A47C- Granted patents
- 4
- Published applications
- 5
- Assignees
- 3
- Inventors
- 15
- Latest grant
- 10 Mar 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year.
Recent patents
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- Spring Core Having Border Wire With Generally Rectangular Cross-Section25 Sep 2014US 2014/0283309 A1L&P Property Management Company
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Most cited
By later US patents
- Reverse coil head coils and innersprings13US 9,022,369 B2Sealy Technology, LLC · 2015
- Spring core having border wire with generally rectangular cross-section3US 8,769,748 B2L&P Property Management Company · 2014
- Spring core having border wire with generally rectangular cross-section3US 9,044,102 B2L&P Property Management Company · 2015