Patent US3310894A successfully refreshed from Google Patents.
US2819790A
Expired / Lapsed
US
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Process for the manufacture of seamless tubes by the thrust bench method from open and perforated blanks
Assignee: Individual
•
Filing: 1953-01-07
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Granted: 1958-01-14
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Expires: 1973-01-07
Abstract
No abstract record available.
Inventors
- 👤 Calmes Alberto
- 👤 Dvorak Emilio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:52
CPC Classifications
B; B21; B21C; B21C5/00; B21C5/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US395723A
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US435078A
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US568635A
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US693119A
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US1422974A
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US1510586A
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US1777728A
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US1945080A
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US2295500A
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US2264688A
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US2343680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |