Mechanical interface connection for vacuum ejectors, and a modular assembly for supplying negative pressure to an industrial process by means of at least one vacuum ejector driven by compressed air
US 6,464,262 Lapsed on the fee recordLapsed Oct 15, 2010 on the fee record · From the USPTO record
20-year base term ended Sep 11, 2020
Second maintenance fee unpaid; grace period ended.
Sep 11, 2000
Oct 15, 2010
Oct 15, 2002
Sep 11, 2020
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Sep 11, 2000, when this application, 09/658,983, was filed | Sep 11, 2020 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Oct 15, 2010 | High confidence |
| Computed term end | The steps above, in order | Oct 15, 2010 | From the USPTO record |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
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Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
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