US2804722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter sharpening machine
Assignee: Gleason Works
•
Filing: 1953-08-24
•
Granted: 1957-09-03
•
Expires: 1973-08-24
Abstract
No abstract record available.
Inventors
- 👤 Leonard O Carlsen
- 👤 Earl D Dammert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:25
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/02; B24B3/021; Y; Y10; Y10T; Y10T74/00; Y10T74/14; Y10T74/1418
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
US1830971A
Cited
US1811254A
Cited
US2077727A
Cited
US2224959A
Cited
US2231762A
Cited
US2352489A
Cited
US2375703A
Cited
US2439263A
Cited
US2441784A
Cited
US2441832A
Cited
US2451235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |