US2155274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of composite metallic structures
Assignee: Standard Specialty & Tube Co
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Filing: 1934-12-21
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Granted: 1939-04-18
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Expires: 1954-12-21
Abstract
No abstract record available.
Inventors
- 👤 Roland M Kenah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:11
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/40; B21D51/42; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-04-17 | 1942-10-17 | 1943-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-17 | 1946-10-17 | 1947-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-17 | 1950-10-17 | 1951-04-18 | $7700.00 | Window Closed / Lapsed |