Patent US2834296A successfully refreshed from Google Patents.
US2834296A
Expired / Lapsed
US
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Pump unit for windshield clearing systems
Assignee: Delman Co
•
Filing: 1953-11-23
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Granted: 1958-05-13
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Expires: 1973-11-23
Abstract
No abstract record available.
Inventors
- 👤 Leonard C Neufeld
- 👤 Rudolph L Lowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:01
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/46; B60S1/48; Y; Y10; Y10S; Y10S417/00; Y10S417/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US224370A
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US1117779A
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US2012218A
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US2648288A
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US2476545A
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US2693766A
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US2721027A
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US2717556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |