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US2804914A
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Assignee: STANLEY R UNDERWOOD
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Filing: 1953-10-27
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Granted: 1957-09-03
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Expires: 1973-10-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Butcko
- 👤 Jr Allen N Clow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:01
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/58; B60N2/60; B60N2/6018; B60N2/6027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US327022A
Cited
US554934A
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US588836A
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US1238581A
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US1470373A
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US1985222A
Cited
US2467468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |