US2713339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular saws
Assignee: National Research Development Corp UK
•
Filing: 1953-06-03
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Granted: 1955-07-19
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Expires: 1973-06-03
Abstract
No abstract record available.
Inventors
- 👤 Sayers Cecil Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:40
CPC Classifications
B; B23; B23D; B23D59/00; B23D59/02; B23D61/00; B23D61/02; B23D61/10; B24; B24D; B24D5/00; B24D5/12; B24D5/126; B28; B28D; B28D1/00; B28D1/02; B28D1/12; B28D1/121
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) | 1958-07-18 | 1959-01-17 | 1959-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-18 | 1963-01-17 | 1963-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-18 | 1967-01-17 | 1967-07-19 | $7700.00 | Window Closed / Lapsed |