US3525900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency controlled enhancement of light emission
Assignee: Microdot Inc
•
Filing: 1965-03-04
•
Granted: 1970-08-25
•
Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 Clifford D Skirvin
- 👤 Jerome Zonis
- 👤 John H Ketola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:50
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/36; H05B41/38; H05B41/39; H05B41/392
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1671109A
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US1996359A
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US2015885A
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US2538062A
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US2745311A
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US2923856A
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US3092754A
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US3308342A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |