US2447043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroforming process
Assignee: Standard Oil Development Co
•
Filing: 1944-08-24
•
Granted: 1948-08-17
•
Expires: 1964-08-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert B Welty
- 👤 Clinton H Holder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:14
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/10; C10G35/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB268774A
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US1732381A
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US2278223A
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US2304168A
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US2311979A
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US2367530A
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US2351624A
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US2360463A
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US2341193A
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US2344330A
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US2387989A
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US2422372A
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US2380035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |