US2823616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Horizontal type gear pump
Assignee: Individual
•
Filing: 1955-05-23
•
Granted: 1958-02-18
•
Expires: 1975-05-23
Abstract
No abstract record available.
Inventors
- 👤 Toyoda Shigeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:01
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/082; F04C2/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1379587A
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US1372576A
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US1620261A
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US1795579A
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US2111883A
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US2221412A
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US2281767A
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US2336294A
Cited
US2479077A
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US2498911A
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US2471149A
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US2571377A
Cited
US2626570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |