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US2906641A
Expired / Lapsed
US
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Process for producing aluminum-coated black iron strip
Assignee: National Research Corp
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Filing: 1958-04-18
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Granted: 1959-09-29
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Expires: 1978-04-18
Abstract
No abstract record available.
Inventors
- 👤 Wallace F Bugbee
- 👤 Philip J Clough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:50
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2405662A
Cited
US2442485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |