Patent US2121606A successfully refreshed from Google Patents.
US2121606A
Expired / Lapsed
US
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Coating for ferrous alloys
Assignee: Westinghouse Electric Corp
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Filing: 1936-07-31
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Granted: 1938-06-21
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Expires: 1956-07-31
Abstract
No abstract record available.
Inventors
- 👤 Mcculloch Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:50
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/10; C04B28/105; C04B2111/00; C04B2111/00474; C04B2111/00482; C04B2111/00525; C04B2111/90; C04B2111/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-06-20 | 1941-12-20 | 1942-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-06-20 | 1945-12-20 | 1946-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-06-20 | 1949-12-20 | 1950-06-21 | $7700.00 | Window Closed / Lapsed |