Patent US3381893A successfully refreshed from Google Patents.
US3381893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Irrigation apparatuses and processes
Assignee: Individual
•
Filing: 1966-07-18
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Granted: 1968-05-07
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Expires: 1986-07-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank J Smith
- 👤 Smith Jarrell Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:22
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
A PROCESS OF SPRINKLING THE FIELD BY A TRAVELING SPRINKLER PIPE COMPRISING THE STEPS OF PASSING IRRIGATION WATER THROUGH A FIRST FIXED PIPE EXTENDING THE LENGTH OF THE FIELD TO BE IRRIGATED, AND, THEREFROM, INTO A SECOND PIPE PIVOTED TO AND HYDRAULICALLY CONNECTED TO A THIRD MOVABLE PIPE, APPLYING PRESSURE BETWEEN SAID SECOND AND THIRD MOVABLE PIPE TO ROTATE SAID SECOND PIPE RELATIVE TO THE THIRD PIPE AND TO MOVE BOTH ENDS OF SAID THIRD PIPE AND ONE END OF SAID SECOND PIPE IN THE SAME DIRECTION OF MOVEMENT AS SAID SPRINKLER PIPE.
References Cited (Backward Citations)
US2726895A
Cited
US2940672A
Cited
DE1170702B
Cited
DE1185855B
Cited
US3281080A
Cited
US3255968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |