US2609974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable plastic valve
Assignee: Food Engineering Corp
•
Filing: 1950-04-19
•
Granted: 1952-09-09
•
Expires: 1970-04-19
Abstract
No abstract record available.
Inventors
- 👤 Donald W Brous
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:05
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16K27/00; F16K27/02; F16K27/029; F16K31/0651
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191417962A
Cited
GB208703A
Cited
US2248958A
Cited
US2320128A
Cited
US2335245A
Cited
US2442599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |