US3039489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve structure
Assignee: Buckeye Iron and Brass Works
•
Filing: 1959-07-01
•
Granted: 1962-06-19
•
Expires: 1979-07-01
Abstract
No abstract record available.
Inventors
- 👤 Lawrence A Botkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:41
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/20; F16K11/22; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87877; Y10T137/87901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL7048C
Cited
US1540529A
Cited
US664368A
Cited
US1692154A
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US2105241A
Cited
FR976854A
Cited
US2747611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |