US2861335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a hollow box in a metal wall
Assignee: Individual
•
Filing: 1955-01-04
•
Granted: 1958-11-25
•
Expires: 1975-01-04
Abstract
No abstract record available.
Inventors
- 👤 Huet Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:05
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/28; B21C37/29; B21C37/292; B21D; B21D19/00; B21D19/08; B21D19/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1528587A
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US2305803A
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US2157354A
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US2453762A
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US2424643A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |