US2436466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for grinding and lapping
Assignee: Thompson Grinder Co
•
Filing: 1945-09-27
•
Granted: 1948-02-24
•
Expires: 1965-09-27
Abstract
No abstract record available.
Inventors
- 👤 John C Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:51
CPC Classifications
B; B24; B24B; B24B47/00; B24B47/02; Y; Y10; Y10S; Y10S451/00; Y10S451/914
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US528726A
Cited
US1790446A
Cited
FR745444A
Cited
US1914647A
Cited
US2022542A
Cited
US2033395A
Cited
US2127210A
Cited
US2171892A
Cited
US2239091A
Cited
US2276625A
Cited
US2378903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-23 | 1951-08-25 | 1952-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-23 | 1955-08-25 | 1956-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-23 | 1959-08-25 | 1960-02-24 | $7700.00 | Window Closed / Lapsed |