US2876984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butterfly valves
Assignee: Individual
•
Filing: 1953-12-21
•
Granted: 1959-03-10
•
Expires: 1973-12-21
Abstract
No abstract record available.
Inventors
- 👤 Reppert Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:57
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB197000A
Cited
US1591903A
Cited
US1682075A
Cited
US1744798A
Cited
US1951283A
Cited
CH163082A
Cited
DE613700C
Cited
CH237059A
Cited
FR1008139A
Cited
US2707614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |