US2860660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valves
Assignee: BARWORTH Inc
•
Filing: 1953-08-28
•
Granted: 1958-11-18
•
Expires: 1973-08-28
Abstract
No abstract record available.
Inventors
- 👤 John C Swatsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:39
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/56; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86831; Y10T137/86879; Y10T74/00; Y10T74/18; Y10T74/18856; Y10T74/18864; Y10T74/18888; Y10T74/18896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US690611A
Cited
US842619A
Cited
US1492878A
Cited
US1466267A
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US2095485A
Cited
US2428565A
Cited
US2590137A
Cited
US2654392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |