Patent US2351687A successfully refreshed from Google Patents.
US2351687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool
Assignee: Warner and Swasey Co
•
Filing: 1941-04-15
•
Granted: 1944-06-20
•
Expires: 1961-04-15
Abstract
No abstract record available.
Inventors
- 👤 Max E Lange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:46
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/12; B23Q5/14; B23Q5/142; B23Q2705/00; B23Q2705/02; B23Q2705/06; B23Q2705/062; B23Q2705/064; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5179
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-06-20 | 1947-12-20 | 1948-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-06-20 | 1951-12-20 | 1952-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-06-20 | 1955-12-20 | 1956-06-20 | $7700.00 | Window Closed / Lapsed |