Patent US3496645A successfully refreshed from Google Patents.
Patent US2570655A successfully refreshed from Google Patents.
US2570655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure gauge and relief valve
Assignee: Individual
•
Filing: 1945-12-29
•
Granted: 1951-10-09
•
Expires: 1965-12-29
Abstract
No abstract record available.
Inventors
- 👤 Daniel O Druge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:34
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/08; A47J27/09; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7781; Y10T137/7834; Y10T137/8158; Y10T137/8326
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1167919A
Cited
US1223252A
Cited
US1523986A
Cited
US1552760A
Cited
US1563847A
Cited
US2013372A
Cited
US2998420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |