US2838765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid discharging control
Assignee: HOSKING PATENT Corp
•
Filing: 1955-08-12
•
Granted: 1958-06-17
•
Expires: 1975-08-12
Abstract
No abstract record available.
Inventors
- 👤 Oakley W Hosking
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:59
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/02; E03D5/024; E03D1/00; E03D1/30; E03D1/302; F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1119137A
Cited
US1203538A
Cited
US1440827A
Cited
GB447056A
Cited
US2341116A
Cited
US2587901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |