Patent US3790981A successfully refreshed from Google Patents.
Patent US2889450A successfully refreshed from Google Patents.
US2889450A
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US
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Casing for lighting device
Assignee: PENTA Inc
•
Filing: 1956-06-18
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Granted: 1959-06-02
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Expires: 1976-06-18
Abstract
No abstract record available.
Inventors
- 👤 Richard A Nordquist
- 👤 Robert C Miller
- 👤 James R Bukosky
- 👤 Howard W Lindgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:56
CPC Classifications
F; F21; F21S; F21S6/00; F21V; F21V21/00; F21V21/14; F21V21/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1292188A
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US1565301A
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GB270061A
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US1851199A
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US1810767A
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US2444540A
Cited
GB612920A
Cited
US2666414A
Cited
US2683953A
Cited
US2739305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |