US2506959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circle cutting attachment for band-saw machines
Assignee: Individual
•
Filing: 1946-06-24
•
Granted: 1950-05-09
•
Expires: 1966-06-24
Abstract
No abstract record available.
Inventors
- 👤 Harley E Helbig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:26
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/48; B23Q1/4804; B23D; B23D59/00; Y; Y10; Y10T; Y10T83/00; Y10T83/647; Y10T83/654; Y10T83/6572; Y10T83/707; Y10T83/7195; Y10T83/727; Y10T83/728
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US149654A
Cited
US403618A
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US724433A
Cited
US1513743A
Cited
GB342792A
Cited
US1956912A
Cited
US2157310A
Cited
US2394789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |