US2874479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engraving machine stylus index
Assignee: Fairchild Semiconductor Corp
•
Filing: 1955-07-15
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Granted: 1959-02-24
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Expires: 1975-07-15
Abstract
No abstract record available.
Inventors
- 👤 Farber Monroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:16
CPC Classifications
B; B44; B44B; B44B3/00; B44B3/06; B44B3/061; B41; B41C; B41C1/00; B41C1/02; B41C1/04; B44B3/001; B44B3/004; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/301624; Y10T409/30168; Y10T409/302408; Y10T409/30784; Y10T409/30952
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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |