US2986373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butterfly valves
Assignee: James Gordon & Co Ltd
•
Filing: 1958-01-13
•
Granted: 1961-05-30
•
Expires: 1978-01-13
Abstract
No abstract record available.
Inventors
- 👤 Masheder Henry Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:45
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US468985A
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US1328565A
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US1390464A
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US1441317A
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US2329407A
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US2586927A
Cited
US2753148A
Cited
US2873942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |