US2684034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid cooling structure for pump shafts
Assignee: Roy E Roth Co
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Filing: 1951-05-12
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Granted: 1954-07-20
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Expires: 1971-05-12
Abstract
No abstract record available.
Inventors
- 👤 Leo C Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:28
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/04; F04D29/043; F04D29/08; F04D29/10; F04D29/106; F04D29/58; F04D29/586; F04D29/588; F04D5/00; F04D5/002; F05; F05D; F05D2240/00; F05D2240/60; F05D2240/61
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |