US3400494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for machining hard materials
Assignee: Individual
•
Filing: 1965-09-24
•
Granted: 1968-09-10
•
Expires: 1985-09-24
Abstract
No abstract record available.
Inventors
- 👤 Seitz Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:59
CPC Classifications
B; B28; B28D; B28D5/00; B28D5/04; B28D5/045; B23; B23D; B23D61/00; B23D61/18; B23D61/185; B24; B24B; B24B27/00; B24B27/06; B24B27/0633; B28D5/0058; B28D5/007; Y; Y02; Y02P; Y02P70/00; Y02P70/10
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) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |