US2527003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding machine
Assignee: Porter Cable Machine Co
•
Filing: 1945-12-21
•
Granted: 1950-10-24
•
Expires: 1965-12-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur N Emmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:10
CPC Classifications
B; B24; B24B; B24B21/00; Y; Y10; Y10S; Y10S29/00; Y10S29/079; Y10S29/088; Y10S29/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1404752A
Cited
US1642171A
Cited
US2165566A
Cited
US2089808A
Cited
US2232149A
Cited
US2273696A
Cited
US2318052A
Cited
US2367107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |