Patent US2704394A successfully refreshed from Google Patents.
US2704394A
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Method of curving tubing sections
Assignee: Dalmo Victor Co
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Filing: 1952-01-29
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Granted: 1955-03-22
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Expires: 1972-01-29
Abstract
No abstract record available.
Inventors
- 👤 Stewart Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:08
CPC Classifications
B; B21; B21D; B21D9/00; B21D9/12; B21D9/125; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US410534A
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US1396918A
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DE455559C
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US1901897A
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US1947611A
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US2111695A
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US2450580A
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US2435904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |