US2612008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal grinding machine
Assignee: Heald Machine Co
•
Filing: 1951-04-10
•
Granted: 1952-09-30
•
Expires: 1971-04-10
Abstract
No abstract record available.
Inventors
- 👤 Martin L Kuniholm
- 👤 Klar John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:33
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/02; B24B5/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1845172A
Cited
FR669887A
Cited
US1996467A
Cited
GB391479A
Cited
US1949552A
Cited
US2127856A
Cited
US2156970A
Cited
US2367069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |