US3360283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling
Assignee: SPIRAL PIPE CORP
•
Filing: 1965-07-30
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Granted: 1967-12-26
•
Expires: 1985-07-30
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Guthrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:35
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/002; F16L21/02; F16L21/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |