G04D 3/0007
For springs
Official title: {for springs (springs in general B21F; mainspring construction G04B1/14; springs for the regulating mechanism see G04D3/0041)}
G04D3/0007 (For springs) appears on 2 US grants and 4 published applications in this corpus.
Search patents in G04D- Granted patents
- 2
- Published applications
- 4
- Assignees
- 1
- Inventors
- 7
- Latest grant
- 19 Jul 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year.
Recent patents
- Tool and method for the separation of balance springs after winding in and heat treatment6 Mar 2025US 2025/0076812 A1Nivarox-FAR S. A.
- Mainspring for a movement of a timepiece and method for manufacturing the same20 Jun 2019US 2019/0187616 A1Nivarox-FAR S. A.
- Method for press-rolling a timepiece mainspring14 Dec 2017US 2017/0355012 A1Nivarox-FAR S. A.
- Barrel spring4 Apr 2013US 2013/0083633 A1
Most cited
By later US patents
No patent in this class has been cited by a later US patent yet.