Patent US2807974A successfully refreshed from Google Patents.
US2807974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic bearing lathe
Assignee: RK Le Blond Machine Tool Co
•
Filing: 1955-05-17
•
Granted: 1957-10-01
•
Expires: 1975-05-17
Abstract
No abstract record available.
Inventors
- 👤 Walter H Meyer
- 👤 Harold J Siekmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:10
CPC Classifications
B; B23; B23Q; B23Q7/00; B23Q7/04; B23B; B23B5/00; B23B5/18; B23B7/00; B23B7/12; B23Q1/00; B23Q1/72; B23Q1/76; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5178; Y10T29/5182; Y10T82/00; Y10T82/19; Y10T82/25; Y10T82/2514; Y10T82/2516; Y10T82/2593; Y10T82/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1961091A
Cited
US2002705A
Cited
US2192437A
Cited
US2305868A
Cited
US2421147A
Cited
US2473108A
Cited
US2643570A
Cited
US2670646A
Cited
US2623429A
Cited
US2655828A
Cited
US2653502A
Cited
US2728253A
Cited
US2714324A
Cited
US2746613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |