B61D 33/0042
Spring cushions
Official title: {Spring cushions}
B61D33/0042 (Spring cushions) appears on 1 US grants and 1 published applications in this corpus.
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- Published applications
- 1
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- Latest grant
- 21 Oct 2025
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| Year | Granted patents | Published applications |
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| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
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