US2798438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for securing a pump impeller to a shaft
Assignee: Mack Trucks Inc
•
Filing: 1953-05-11
•
Granted: 1957-07-09
•
Expires: 1973-05-11
Abstract
No abstract record available.
Inventors
- 👤 Jack F Greathouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:20
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/20; F04D29/04; F04D29/041; F04D29/0416; F04D29/08; F04D29/10; F04D29/12; F04D29/126; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F05; F05B; F05B2240/00; F05B2240/70; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7018; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |