Patent US643461A successfully refreshed from Google Patents.
Patent US1424952A successfully refreshed from Google Patents.
Patent US1499015A successfully refreshed from Google Patents.
Patent US3035938A successfully refreshed from Google Patents.
Patent US2980434A successfully refreshed from Google Patents.
US2980434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work holding and centering chuck
Assignee: John Oster Manufacturing Co
•
Filing: 1959-03-20
•
Granted: 1961-04-18
•
Expires: 1979-03-20
Abstract
No abstract record available.
Inventors
- 👤 Hoffman Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:06
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/1261; B23B31/1269; Y; Y10; Y10T; Y10T279/00; Y10T279/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |