US1743916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liner for centrifugal pumps
Assignee: Frederick Iron & Steel Co
•
Filing: 1929-04-17
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Granted: 1930-01-14
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Expires: 1949-04-17
Abstract
No abstract record available.
Inventors
- 👤 George R Hargis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:36
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; F04D29/16; F04D29/165; F04D29/167; F04D29/40; F04D29/42; F04D29/426; F04D29/4286; F04D29/60; F04D29/62; F04D29/622
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-01-13 | 1933-07-15 | 1934-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-01-13 | 1937-07-15 | 1938-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-01-13 | 1941-07-15 | 1942-01-14 | $7700.00 | Window Closed / Lapsed |