Patent US3530287A successfully refreshed from Google Patents.
US3530287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Streetlighting luminaire containing replaceable sealed optical system
Assignee: Westinghouse Electric Corp
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Filing: 1968-03-06
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Granted: 1970-09-22
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Expires: 1988-03-06
Abstract
No abstract record available.
Inventors
- 👤 Donald E Husby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:46
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/04; F21S; F21S8/00; F21S8/08; F21S8/085; F21S8/086; F21V15/00; F21V15/01; F21V21/00; F21V21/10; F21V21/116; F21W; F21W2131/00; F21W2131/10; F21W2131/103
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) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |