Patent US3493804A successfully refreshed from Google Patents.
US3493804A
Expired / Lapsed
US
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Automotive headlamp with integral cleaning system
Assignee: Individual
•
Filing: 1966-04-20
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Granted: 1970-02-03
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Expires: 1986-04-20
Abstract
No abstract record available.
Inventors
- 👤 Lewis Harvey Fennell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:08
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/56; B60S1/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1269395A
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US2178068A
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US2288429A
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US2334508A
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FR1041171A
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US2787802A
Cited
US2749568A
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US2884656A
Cited
US3058142A
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US3138816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |