US3488072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick disconnect pipe coupling
Assignee: AO Smith Corp
•
Filing: 1968-07-10
•
Granted: 1970-01-06
•
Expires: 1988-07-10
Abstract
No abstract record available.
Inventors
- 👤 Chester Allen
- 👤 Kenneth L Furnatter
- 👤 Harry Pierkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:13
CPC Classifications
F; F16; F16L; F16L47/00; F16L47/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |