US3550155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printer using a solid state semiconductor material as a switch
Assignee: TDK Micronas GmbH
•
Filing: 1968-01-18
•
Granted: 1970-12-22
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Expires: 1988-01-18
Abstract
No abstract record available.
Inventors
- 👤 Louis A De Rosa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:18
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2939029A
Cited
US3205301A
Cited
US3317316A
Cited
US3271591A
Cited
US3397404A
Cited
US3439174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |