Patent US2196503A successfully refreshed from Google Patents.
US2196503A
Expired / Lapsed
US
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Ball valve
Assignee: FMC Corp
•
Filing: 1939-06-12
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Granted: 1940-04-09
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Expires: 1959-06-12
Abstract
No abstract record available.
Inventors
- 👤 Mcfee Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:58
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K1/00; F16K1/16; Y; Y10; Y10S; Y10S137/00; Y10S137/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-04-09 | 1943-10-09 | 1944-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-09 | 1947-10-09 | 1948-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-09 | 1951-10-09 | 1952-04-09 | $7700.00 | Window Closed / Lapsed |