US2443679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer valve
Assignee: Individual
•
Filing: 1945-12-19
•
Granted: 1948-06-22
•
Expires: 1965-12-19
Abstract
No abstract record available.
Inventors
- 👤 Russell M Glantzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:27
CPC Classifications
B; B28; B28C; B28C7/00; B28C7/04; B28C7/12; B28C7/126; B28C7/128; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7039; Y10T137/8593; Y10T137/85978; Y10T137/85986; Y10T137/85994; Y10T137/87265; Y10T137/87338; Y10T137/87917; Y10T137/88054; Y10T137/88062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US830046A
Cited
US1522752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-22 | 1951-12-22 | 1952-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-22 | 1955-12-22 | 1956-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-22 | 1959-12-22 | 1960-06-22 | $7700.00 | Window Closed / Lapsed |