US2487137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Producing coatings on metal
Assignee: Armco Inc
•
Filing: 1947-09-10
•
Granted: 1949-11-08
•
Expires: 1967-09-10
Abstract
No abstract record available.
Inventors
- 👤 George R Hoover
- 👤 Cox Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:06
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/34; C23C22/36; C23C22/362
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1911726A
Cited
FR728364A
Cited
FR728411A
Cited
GB522681A
Cited
US2234206A
Cited
US2203670A
Cited
US2314565A
Cited
US2312855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |