Patent US2698158A successfully refreshed from Google Patents.
US2698158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slow-seating valve assembly
Assignee: Individual
•
Filing: 1952-03-28
•
Granted: 1954-12-28
•
Expires: 1972-03-28
Abstract
No abstract record available.
Inventors
- 👤 Albert J Granberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:30
CPC Classifications
F; F16; F16K; F16K21/00; F16K21/04; F16K21/06; F16K21/12; Y; Y10; Y10T; Y10T137/00; Y10T137/3367; Y10T137/3476; Y10T137/353
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US540347A
Cited
US613802A
Cited
US851165A
Cited
US1541538A
Cited
US2039109A
Cited
US2102848A
Cited
US2000297A
Cited
US2205033A
Cited
GB496638A
Cited
US2557378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |