US1442381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding and polishing machine
Assignee: Individual
•
Filing: 1921-06-07
•
Granted: 1923-01-16
•
Expires: 1941-06-07
Abstract
No abstract record available.
Inventors
- 👤 Robert E Bole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:03
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/02; B24B5/04; B24B5/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-01-15 | 1926-07-17 | 1927-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-01-15 | 1930-07-17 | 1931-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-01-15 | 1934-07-17 | 1935-01-16 | $7700.00 | Window Closed / Lapsed |