US2563069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-operated hack saw
Assignee: Individual
•
Filing: 1948-05-29
•
Granted: 1951-08-07
•
Expires: 1968-05-29
Abstract
No abstract record available.
Inventors
- 👤 Alfred M Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:01
CPC Classifications
B; B23; B23D; B23D49/00; B23D49/002; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8841; Y10T83/8844; Y10T83/8878
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) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |