US2858768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant pump
Assignee: Union Carbide Corp
•
Filing: 1954-08-12
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Granted: 1958-11-04
•
Expires: 1974-08-12
Abstract
No abstract record available.
Inventors
- 👤 Jr William M Gaylord
- 👤 Henry S Raub
- 👤 Albert F Hauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:14
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/62; F04D29/628; F04D7/00; F04D7/02; F04D7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2092351A
Cited
GB459468A
Cited
US2433589A
Cited
US2283263A
Cited
DE903535C
Cited
US2658454A
Cited
US2741991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |