US2440148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centerless grinding machine attachment
Assignee: Bower Roller Bearing Co
•
Filing: 1946-05-09
•
Granted: 1948-04-20
•
Expires: 1966-05-09
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Madison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:39
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/18; B24B5/185; B24B5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1879110A
Cited
US2047055A
Cited
US2290269A
Cited
US2329301A
Cited
US2270525A
Cited
US2379281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |