US2857487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control switch for windshield clearing systems
Assignee: Delman Co
•
Filing: 1954-10-25
•
Granted: 1958-10-21
•
Expires: 1974-10-25
Abstract
No abstract record available.
Inventors
- 👤 Edmond F Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:48
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/46; B60S1/48; B60S1/481; B60S1/482
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1744940A
Cited
US1998821A
Cited
US2162985A
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US2617136A
Cited
US2526061A
Cited
US2626336A
Cited
US2702918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |