Patent US2635573A successfully refreshed from Google Patents.
US2635573A
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US
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Pipe welding machine
Assignee: SACRAMENTO PIPE WORKS
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Filing: 1949-11-08
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Granted: 1953-04-21
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Expires: 1969-11-08
Abstract
No abstract record available.
Inventors
- 👤 Robert H Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:46
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/025; B23K9/0253
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1330765A
Cited
US1706393A
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US1919186A
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US1983930A
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US2084889A
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US2268368A
Cited
US2526723A
Cited
US2517574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |