US2760859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallurgical flux compositions
Assignee: Individual
•
Filing: 1952-09-10
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Granted: 1956-08-28
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Expires: 1972-09-10
Abstract
No abstract record available.
Inventors
- 👤 Edward H Graf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:58
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3603; B23K35/3605
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
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
Claim 2
Dependent Claim
158 words
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
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |