US2775284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for making arched panel sheets
Assignee: INLAND STEEL PRODUCTS CO
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Filing: 1953-01-21
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Granted: 1956-12-25
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Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Leroy N Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:23
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/08; B21D11/20; B21D11/206; B21D13/00; B21D13/04; B21D5/00; B21D5/06; B21D5/08
Claims Analysis
Total Claims: 0
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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) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |