US2982415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable irrigation filter
Assignee: Individual
•
Filing: 1957-05-08
•
Granted: 1961-05-02
•
Expires: 1977-05-08
Abstract
No abstract record available.
Inventors
- 👤 George C Contreras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:03
CPC Classifications
A; A01; A01G; A01G25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US41075A
Cited
US284428A
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US692377A
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US694440A
Cited
US843991A
Cited
US1204309A
Cited
US1472799A
Cited
US1976128A
Cited
US2189361A
Cited
US2792123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |