US3496451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat dissipating lamp dimmer of the screw-in type
Assignee: PRODUCT RESEARCH ASSOCIATES IN
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Filing: 1966-12-09
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Granted: 1970-02-17
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Expires: 1986-12-09
Abstract
No abstract record available.
Inventors
- 👤 Edward T Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:55
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/94; H05; H05B; H05B39/00; H05B39/04; H05B39/08; Y; Y10; Y10S; Y10S315/00; Y10S315/04; Y10S323/00; Y10S323/905
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) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |