US3513309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric unitary device for emitting fluorescence and amplifying radiation under stimulation in opposite directions
Assignee: Individual
•
Filing: 1968-01-29
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Granted: 1970-05-19
•
Expires: 1988-01-29
Abstract
No abstract record available.
Inventors
- 👤 Guenter O Hehemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:29
CPC Classifications
F; F21; F21K; F21K2/00; H; H05; H05B; H05B33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2936416A
Cited
US3235799A
Cited
US3093735A
Cited
US3093758A
Cited
US3254264A
Cited
US3394081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |