US2934864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belt-grinding machine
Assignee: Progressive Tool & Manufacturing Co
•
Filing: 1958-12-23
•
Granted: 1960-05-03
•
Expires: 1978-12-23
Abstract
No abstract record available.
Inventors
- 👤 Karbowski Sylvester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:12
CPC Classifications
B; B24; B24B; B24B21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1019066A
Cited
US1257691A
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US1820377A
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US1974806A
Cited
US2061607A
Cited
US2463287A
Cited
US2470615A
Cited
US2573220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |