US2664676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finishing of workpieces
Assignee: WMF Group GmbH
•
Filing: 1950-06-01
•
Granted: 1954-01-05
•
Expires: 1970-06-01
Abstract
No abstract record available.
Inventors
- 👤 Paul K A Cuppers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
B; B24; B24B; B24B31/00; B24B31/10; B24B31/104; B24B31/003; C; C07; C07C; C07C17/00; C07C17/013; C07C17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US464584A
Cited
US801403A
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US1178827A
Cited
GB119823A
Cited
US2218353A
Cited
US2425640A
Cited
US2419687A
Cited
US2494733A
Cited
US2480238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |