US3406656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling coating thickness
Assignee: United States Steel Corp
•
Filing: 1967-02-02
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Granted: 1968-10-22
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Expires: 1987-02-02
Abstract
No abstract record available.
Inventors
- 👤 Robert W Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:16
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/14; C23C2/16; C23C2/18; C23C2/20; B; B05; B05C; B05C11/00; B05C11/02; B05C11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1140873A
Cited
US2563259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |