Patent US2804734A successfully refreshed from Google Patents.
US2804734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for grinding the toothed surfaces of gears
Assignee: Nachi Machining Technology Co
•
Filing: 1954-06-14
•
Granted: 1957-09-03
•
Expires: 1974-06-14
Abstract
No abstract record available.
Inventors
- 👤 Max B Mentley
- 👤 Arthur B Bassoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:43
CPC Classifications
B; B23; B23F; B23F1/00; B23F1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1694188A
Cited
US1870764A
Cited
US2154054A
Cited
US2066220A
Cited
US2136491A
Cited
US2212855A
Cited
US2401561A
Cited
US2452123A
Cited
US2672716A
Cited
US2686993A
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 |