US2854076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circle cutting attachment
Assignee: Individual
•
Filing: 1955-08-29
•
Granted: 1958-09-30
•
Expires: 1975-08-29
Abstract
No abstract record available.
Inventors
- 👤 Charles E Keim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:08
CPC Classifications
B; B23; B23D; B23D29/00; B23D29/02; B26; B26F; B26F1/00; B26F1/38; B26F1/3846; Y; Y10; Y10T; Y10T408/00; Y10T408/86; Y10T408/885; Y10T408/89; Y10T408/892; Y10T408/8923; Y10T83/00; Y10T83/768; Y10T83/7755; Y10T83/7788
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |