Patent US1635839A successfully refreshed from Google Patents.
US1635839A
Expired / Lapsed
US
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Nozzle for ladles used in pouring molten metal
Assignee: Individual
•
Filing: 1926-06-11
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Granted: 1927-07-12
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Expires: 1946-06-11
Abstract
No abstract record available.
Inventors
- 👤 Hassall John Knowles
- 👤 Harris Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:58
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/50; Y; Y10; Y10T; Y10T137/00; Y10T137/9464
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) | 1930-07-11 | 1931-01-10 | 1931-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-07-11 | 1935-01-10 | 1935-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-07-11 | 1939-01-10 | 1939-07-12 | $7700.00 | Window Closed / Lapsed |