US2241772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable fluid control
Assignee: HOMER LAUGHLIN CHINA Co
•
Filing: 1939-12-06
•
Granted: 1941-05-13
•
Expires: 1959-12-06
Abstract
No abstract record available.
Inventors
- 👤 Walter H Emerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:11
CPC Classifications
B; B28; B28B; B28B17/00; F; F16; F16K; F16K31/00; F16K31/44; F16K31/48; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86421; Y10T137/86437; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/1828; Y10T74/19; Y10T74/1956; Y10T74/21; Y10T74/2101; Y10T74/2102
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1944-05-12 | 1944-11-11 | 1945-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-05-12 | 1948-11-11 | 1949-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-05-12 | 1952-11-11 | 1953-05-13 | $7700.00 | Window Closed / Lapsed |