Patent US2877790A successfully refreshed from Google Patents.
US2877790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-closing valve for tap bushings of kegs
Assignee: Individual
•
Filing: 1954-12-17
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Granted: 1959-03-17
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Expires: 1974-12-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Wilhelm
- 👤 Wilhelm George
- 👤 Warnat Eric
- 👤 Joseph A Zink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:03
CPC Classifications
B; B67; B67D; B67D1/00; B67D1/08; B67D1/0829; B67D1/0831; B67D1/0835; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/612; Y10T137/613; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US220372A
Cited
GB189619500A
Cited
US676366A
Cited
US1488042A
Cited
US1885894A
Cited
US1867988A
Cited
US2021532A
Cited
US2235308A
Cited
US2358666A
Cited
GB682591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |