US2881246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engraving machine
Assignee: Fairchild Semiconductor Corp
•
Filing: 1955-09-27
•
Granted: 1959-04-07
•
Expires: 1975-09-27
Abstract
No abstract record available.
Inventors
- 👤 Sherman M Fairchild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:59
CPC Classifications
B; B41; B41C; B41C1/00; B41C1/02; B41C1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1719621A
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US2063614A
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US2092764A
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US2179002A
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US2209183A
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US2312042A
Cited
USRE23914E
Cited
US2813925A
Cited
US2813926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |