US2820402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for surface treatment of elongated, relatively wide metal strips
Assignee: Svenska Metallverken AB
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Filing: 1953-11-24
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Granted: 1958-01-21
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Expires: 1973-11-24
Abstract
No abstract record available.
Inventors
- 👤 Waenerlund Torsten Goran Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:16
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/13; Y; Y10; Y10T; Y10T29/00; Y10T29/45; Y10T29/4517; Y10T29/51; Y10T29/5197; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/305208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |