US3511686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for annealing and coating metal strip
Assignee: Production Machinery Corp
•
Filing: 1968-01-11
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Granted: 1970-05-12
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Expires: 1988-01-11
Abstract
No abstract record available.
Inventors
- 👤 David A Withrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:24
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C23; C23C; C23C2/00; C23C2/003; C23C2/0034; C23C2/00342; C23C2/00344; C23C2/0035; C23C2/0038; C23C2/004; C23C2/02; C23C2/022; C23C2/0222; C23C2/0224
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2019445A
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US2110893A
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US2111826A
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DE702976C
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US2797173A
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US2926103A
Cited
AT231781B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |