US2853100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid flow control valve
Assignee: Individual
•
Filing: 1952-06-23
•
Granted: 1958-09-23
•
Expires: 1972-06-23
Abstract
No abstract record available.
Inventors
- 👤 John H Donnelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:08
CPC Classifications
B; B67; B67D; B67D1/00; B67D1/0042; B67D1/0081; B67D1/0082; B67D1/08; B67D1/12; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8122; Y10T137/8593; Y10T137/87056; Y10T137/87096; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |