US1967053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of refining lead bismuth alloy
Assignee: Teck Metals Ltd
•
Filing: 1931-08-20
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Granted: 1934-07-17
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Expires: 1951-08-20
Abstract
No abstract record available.
Inventors
- 👤 Fingland John James
- 👤 Turnbull Alexander Douglas
- 👤 Mcintyre Peter Findlay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:05
CPC Classifications
C; C22; C22B; C22B13/00; C22B13/06
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) | 1937-07-16 | 1938-01-15 | 1938-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-07-16 | 1942-01-15 | 1942-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-07-16 | 1946-01-15 | 1946-07-17 | $7700.00 | Window Closed / Lapsed |