US3514668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controllable intensity illumination system and method
Assignee: EUGENE B MELCHOR
•
Filing: 1967-05-17
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Granted: 1970-05-26
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Expires: 1987-05-17
Abstract
No abstract record available.
Inventors
- 👤 Rollie C Johnson
- 👤 Eugene B Melchor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:05
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H05; H05B; H05B41/00; H05B41/14; H05B41/36; H05B41/38; H05B41/39; H05B41/392; H05B41/3921; Y; Y10; Y10S; Y10S315/00; Y10S315/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2598473A
Cited
US2928994A
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US2982881A
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US3146406A
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US3037145A
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US3328721A
Cited
US3319180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |