Patent US2612730A successfully refreshed from Google Patents.
US2612730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil grinding equipment
Assignee: Crucible Steel Company of America
•
Filing: 1950-09-15
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Granted: 1952-10-07
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Expires: 1970-09-15
Abstract
No abstract record available.
Inventors
- 👤 Wallace K Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:57
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/36; B24B5/38; Y; Y10; Y10S; Y10S451/00; Y10S451/909
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US378063A
Cited
US1020789A
Cited
US1350531A
Cited
US1714246A
Cited
US1984237A
Cited
US2095202A
Cited
US2178875A
Cited
US2459707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |