US2922585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating used submerged arc welding flux
Assignee: Individual
•
Filing: 1956-01-24
•
Granted: 1960-01-26
•
Expires: 1976-01-24
Abstract
No abstract record available.
Inventors
- 👤 Lester U Searfoss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:15
CPC Classifications
B; B02; B02C; B02C13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US816735A
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US1286831A
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US1593491A
Cited
US1898371A
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US2175484A
Cited
US2177358A
Cited
US2264204A
Cited
US2360892A
Cited
US2515194A
Cited
US2721035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |