Patent US2593733A successfully refreshed from Google Patents.
US2593733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assembly
Assignee: Parker Appliance Co
•
Filing: 1944-10-16
•
Granted: 1952-04-22
•
Expires: 1964-10-16
Abstract
No abstract record available.
Inventors
- 👤 Robert H Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:42
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/085; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86501
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US694328A
Cited
GB159992A
Cited
US1366862A
Cited
US2042186A
Cited
US2165096A
Cited
US2356786A
Cited
US2414451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |