US2684256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Irrigating pipe coupling
Assignee: CHAMPION CORP
•
Filing: 1950-11-21
•
Granted: 1954-07-20
•
Expires: 1970-11-21
Abstract
No abstract record available.
Inventors
- 👤 Kasmir J Krukowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:32
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/50; F16L37/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2187119A
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US2449735A
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US2464466A
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US2494854A
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US2494855A
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US2499476A
Cited
US2510477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |