US1924203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sand protected by-pass seal
Assignee: WINTROATH PUMPS Ltd
•
Filing: 1929-12-13
•
Granted: 1933-08-29
•
Expires: 1949-12-13
Abstract
No abstract record available.
Inventors
- 👤 John A Wintroath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:38
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/70; F04D29/708; F04D29/18; F04D29/22; F04D29/2261; F04D29/2266; F04D7/00; F04D7/02; F04D7/04; Y; Y10; Y10S; Y10S415/00; Y10S415/901
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) | 1936-08-28 | 1937-02-27 | 1937-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-08-28 | 1941-02-27 | 1941-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-08-28 | 1945-02-27 | 1945-08-29 | $7700.00 | Window Closed / Lapsed |