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Patent US1765368A successfully refreshed from Google Patents.
US1765368A
Expired / Lapsed
US
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Method of welding
Assignee: Union Metal Manufacturing Co
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Filing: 1928-02-13
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Granted: 1930-06-24
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Expires: 1948-02-13
Abstract
No abstract record available.
Inventors
- 👤 Carl A Frahm
- 👤 Edmund W Riemenschneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:42
CPC Classifications
B; B21; B21D; B21D19/00; B21D19/005; B21B; B21B1/00; B21B1/08; B21B1/22; B21B1/224; B23; B23K; B23K33/00
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) | 1933-06-23 | 1933-12-23 | 1934-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-06-23 | 1937-12-23 | 1938-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-06-23 | 1941-12-23 | 1942-06-24 | $7700.00 | Window Closed / Lapsed |