US3562377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming irrigation pipe
Assignee: ZETZSCHE JR JAMES B
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Filing: 1969-04-15
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Granted: 1971-02-09
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Expires: 1989-04-15
Abstract
Abstract A METHOD OF FORMING CONTROLLED SIZE ORIFICES WITHIN AN ELONGATED LENGTH OF PIPE INCLUDING THE STEPS OF MOVING THE PIPE ALONG A PREDETERMINED PATH, INSERTING A PIERCING TOOL THROUGH ONE WALL OF THE PIPE, ORIENTATING THE PIERCING TOOL AT AN ACUTE ANGLE TO THE PIERCED PIPE WALL, AND ROTATING THE PIERCING TOOL ABOUT AN AXIS PERPENDIUCLAR TO THE PIERCED WALL AND INTERSECTING THE PIERCING TOOL WITHIN THE PIERCED WALL SO AS TO EFFECT A PERMANENT DEFORMATION OF THE MATERIAL OF THE PIERCED WALL SO AS TO DEFINE AN ORIFICE THERETHROUGH UPON A WITHDRAWAL OF THE PIERCING TOOL. D R A W I N G
Inventors
- 👤 James B Zetzsche Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:14
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/02; A01G25/026; B; B21; B21D; B21D28/00; B21D28/24; B21D28/28; B26; B26F; B26F1/00; B26F1/0015; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/50; B29C66/51; B29C66/53; B29C66/532; B29C66/5326; B29C2793/00; B29C2793/0045; B29C65/00; B29C65/02; B29L; B29L2023/00; B29L2023/22
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |