US2800917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for poultry watering trough
Assignee: FMC Corp
•
Filing: 1953-03-16
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Granted: 1957-07-30
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Expires: 1973-03-16
Abstract
No abstract record available.
Inventors
- 👤 Hans G Hoffmeister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:32
CPC Classifications
F; F16; F16K; F16K21/00; F16K21/04; F16K21/16; F16K21/165; A; A01; A01K; A01K39/00; A01K39/02; A01K39/022; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7339; Y10T137/7355; Y10T137/7358; Y10T137/7365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |