Patent US2021731A successfully refreshed from Google Patents.
US2021731A
Expired / Lapsed
US
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Metal spigot
Assignee: Milwaukee Gas Specialty Co
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Filing: 1934-11-09
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Granted: 1935-11-19
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Expires: 1954-11-09
Abstract
No abstract record available.
Inventors
- 👤 Oscar J Leins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:51
CPC Classifications
B; B67; B67B; B67B7/00; B67B7/24; B67B7/26; B67D; B67D1/00; B67D1/04; B67D1/08; B67D1/12; B67D1/14; B67D1/1405; B67D1/145; B67D1/1466; B67D2001/0095; B67D2001/0096; B67D2001/0097; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-11-18 | 1939-05-20 | 1939-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-18 | 1943-05-20 | 1943-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-18 | 1947-05-20 | 1947-11-19 | $7700.00 | Window Closed / Lapsed |