Patent US3387864A successfully refreshed from Google Patents.
US3387864A
Expired / Lapsed
US
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Pipe coupling
Assignee: Amercoat Corp
•
Filing: 1965-07-19
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Granted: 1968-06-11
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Expires: 1985-07-19
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:12
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/10; F16L13/11; Y; Y10; Y10S; Y10S285/00; Y10S285/915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US769869A
Cited
FR358855A
Cited
US1001682A
Cited
GB289902A
Cited
US2369381A
Cited
DE1046427B
Cited
DE1041751B
Cited
DE1014803B
Cited
US3100658A
Cited
US3224795A
Cited
US3233922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |