Patent US2452125A successfully refreshed from Google Patents.
US2452125A
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US
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Method of forming and changing the cross section of convoluted metal tubing
Assignee: TITEFLEX Inc
•
Filing: 1945-06-12
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Granted: 1948-10-26
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Expires: 1965-06-12
Abstract
No abstract record available.
Inventors
- 👤 Ingalls David
- 👤 Petersen John Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:45
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/12; B21C37/124; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49874
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE346455C
Cited
US166294A
Cited
US174609A
Cited
US307727A
Cited
US375687A
Cited
US378769A
Cited
US435419A
Cited
US691446A
Cited
US703493A
Cited
US1179578A
Cited
US1547609A
Cited
US1661908A
Cited
GB427661A
Cited
US2127943A
Cited
US2179530A
Cited
US2156538A
Cited
US2312094A
Cited
US2375763A
Cited
US2324030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |