US2442624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal grinder and polisher
Assignee: Nordberg Manufacturing Co
•
Filing: 1944-07-20
•
Granted: 1948-06-01
•
Expires: 1964-07-20
Abstract
No abstract record available.
Inventors
- 👤 Henry H Talboys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:44
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/36; B24B5/40; B24B33/00; B24B33/08; Y; Y10; Y10S; Y10S29/00; Y10S29/068; Y10S29/077; Y10S29/083; Y10S29/091
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-01 | 1951-12-01 | 1952-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-01 | 1955-12-01 | 1956-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-01 | 1959-12-01 | 1960-06-01 | $7700.00 | Window Closed / Lapsed |