Patent US2688337A successfully refreshed from Google Patents.
US2688337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay action valve
Assignee: Honeywell Inc
•
Filing: 1950-09-20
•
Granted: 1954-09-07
•
Expires: 1970-09-20
Abstract
No abstract record available.
Inventors
- 👤 Paul F Shivers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:26
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/8593; Y10T137/86919
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1215071A
Cited
US2068102A
Cited
US2200671A
Cited
US2191319A
Cited
US2178672A
Cited
US2212833A
Cited
US2297418A
Cited
US2494714A
Cited
US2468960A
Cited
US2489823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |