US3507633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular saw blade of chromium nickel steel with an oxide coat
Assignee: FERNAND J DEWEZ JR
•
Filing: 1967-04-17
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Granted: 1970-04-21
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Expires: 1987-04-17
Abstract
No abstract record available.
Inventors
- 👤 Fernand J Dewez Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:22
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/24; B; B23; B23D; B23D61/00; B23D61/02; B23D61/022; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/44; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/27; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12236; Y10T428/12243; Y10T428/21; Y10T428/218; Y10T428/219; Y10T428/24; Y10T428/24479; Y10T428/24488; Y10T428/24777; Y10T83/00; Y10T83/929; Y10T83/9372; Y10T83/9403
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) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |