US3060960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curtain valve
Assignee: Buensod Stacey Corp
•
Filing: 1959-04-24
•
Granted: 1962-10-30
•
Expires: 1979-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robert W Waterfill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:04
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/18; Y; Y10; Y10S; Y10S251/00; Y10S251/901; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/785; Y10T137/7869
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US69624A
Cited
US353134A
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US796723A
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US970599A
Cited
US1067777A
Cited
US2322039A
Cited
US2637338A
Cited
US2868494A
Cited
US2890716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |