Patent US3504822A successfully refreshed from Google Patents.
US3504822A
Expired / Lapsed
US
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Container and venting device
Assignee: VACUUM CO
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Filing: 1968-05-28
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Granted: 1970-04-07
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Expires: 1988-05-28
Abstract
No abstract record available.
Inventors
- 👤 Frans Saloski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:38
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/04; B; B65; B65D; B65D51/00; B65D51/16; B65D51/1672; B65D51/1683; B65D7/00; B65D7/12; B65D7/22; F16K15/00; F16K15/14; F16K15/141; F16K15/142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2620945A
Cited
US2787400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |