US2566402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear grinding machine
Assignee: Gleason Works
•
Filing: 1948-10-23
•
Granted: 1951-09-04
•
Expires: 1968-10-23
Abstract
No abstract record available.
Inventors
- 👤 William C Critchley
- 👤 Herman A Male
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:13
CPC Classifications
B; B23; B23F; B23F9/00; B23F9/02; B23F9/025; B23F23/00; B23F23/12; B23F23/1225; Y; Y10; Y10S; Y10S451/00; Y10S451/90
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US856662A
Cited
DE368843C
Cited
US1840088A
Cited
US1961849A
Cited
US1979870A
Cited
DE650470C
Cited
US2196087A
Cited
US2130021A
Cited
US2267391A
Cited
US2387166A
Cited
US2395544A
Cited
US2414182A
Cited
US2424271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |