US3036807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve apparatus
Assignee: Cooper Industries LLC
•
Filing: 1957-10-17
•
Granted: 1962-05-29
•
Expires: 1977-10-17
Abstract
No abstract record available.
Inventors
- 👤 Maurice C Lucky
- 👤 Robert C Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:48
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/06; E21B33/061; E21B33/062; F; F16; F16K; F16K3/00; F16K3/02; F16K3/0254
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US347856A
Cited
GB186668A
Cited
US1834063A
Cited
US2337841A
Cited
US2690192A
Cited
US2729242A
Cited
US2795391A
Cited
US2828767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |