Patent US3376052A successfully refreshed from Google Patents.
US3376052A
Expired / Lapsed
US
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Irrigation pipe coupler
Assignee: Individual
•
Filing: 1966-02-24
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Granted: 1968-04-02
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Expires: 1986-02-24
Abstract
No abstract record available.
Inventors
- 👤 Paul B Zimmerer
- 👤 Bernard J Zimmerer
- 👤 Arthur L Zimmerer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:02
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/02; F16L41/021; E; E02; E02B; E02B13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE539045A
Cited
US2097374A
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US2262627A
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US2677560A
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US2898741A
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US2702717A
Cited
DE957176C
Cited
US2916305A
Cited
FR1202038A
Cited
FR1226525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |