Patent US2528038A successfully refreshed from Google Patents.
Patent US922523A successfully refreshed from Google Patents.
US922523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux for the autogenous welding of aluminum.
Assignee: Individual
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Filing: 1907-02-25
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Granted: 1909-05-25
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Expires: 1927-02-25
Abstract
No abstract record available.
Inventors
- 👤 Max Ulrich Schoop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:47
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3603
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) | 1912-05-24 | 1912-11-23 | 1913-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-05-24 | 1916-11-23 | 1917-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-05-24 | 1920-11-23 | 1921-05-25 | $7700.00 | Window Closed / Lapsed |