Patent US2537512A successfully refreshed from Google Patents.
US2537512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sharpening attachment for multiple rotary band cutters
Assignee: Individual
•
Filing: 1949-05-17
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Granted: 1951-01-09
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Expires: 1969-05-17
Abstract
No abstract record available.
Inventors
- 👤 Crissey Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:00
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/58; B24B3/583; Y; Y10; Y10S; Y10S451/00; Y10S451/917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |