US2877392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-conductor device
Assignee: US Philips Corp
•
Filing: 1954-12-07
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Granted: 1959-03-10
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Expires: 1974-12-07
Abstract
No abstract record available.
Inventors
- 👤 Koe Augustinus Aloysius Maria
- 👤 Jan Coenraad Van Vessem
- 👤 Roovers Wilhelmus Antonius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:30
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/20; H10D; H10D99/00; H10W40/00; H10W40/70; H10W76/00; H10W76/40; H10W72/071; H10W72/075; H10W72/07551; H10W72/07554
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) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |