US3368831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling device
Assignee: Philmac Ltd
•
Filing: 1966-11-25
•
Granted: 1968-02-13
•
Expires: 1986-11-25
Abstract
No abstract record available.
Inventors
- 👤 Malcolm W Phillipps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:04
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/08; F16L19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US172470A
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FR1309962A
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US974878A
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US1327106A
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US2059920A
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GB431918A
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US2152975A
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US2219053A
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US2464416A
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FR981569A
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US2978262A
Cited
US3158388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |