US3412747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beer keg fitting with annular check valve for air
Assignee: P Ballantine & Sons
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Filing: 1966-05-02
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Granted: 1968-11-26
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Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Sichler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:22
CPC Classifications
B; B67; B67D; B67D1/00; B67D1/08; B67D1/0829; B67D1/0831; B67D1/0832; F; F16; F16K; F16K15/00; F16K15/14; F16K15/1402; F16K15/148; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/314; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784; Y10T137/7879; Y10T137/7888; Y10T137/789
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |