US3455536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-aligning valve seat
Assignee: Monsanto Co
•
Filing: 1966-12-27
•
Granted: 1969-07-15
•
Expires: 1986-12-27
Abstract
No abstract record available.
Inventors
- 👤 George E Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:04
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16K31/0658; F16K31/0675
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA464506A
Cited
US2417494A
Cited
US2602627A
Cited
US2543010A
Cited
US2655936A
Cited
US2843147A
Cited
US2973007A
Cited
CH383713A
Cited
AT227050B
Cited
US3355140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |