US3390898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick release threaded coupling
Assignee: Individual
•
Filing: 1965-03-22
•
Granted: 1968-07-02
•
Expires: 1985-03-22
Abstract
No abstract record available.
Inventors
- 👤 Kunio A Sumida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:51
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/12; F16L37/1215; F16L37/10; F16L37/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US592899A
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US798441A
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US1029819A
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US1211387A
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US1500531A
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US2170574A
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US2361827A
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US2463179A
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US2708589A
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DE801867C
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US3075792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |