US3471179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adapter
Assignee: Advanced Drainage Systems Inc
•
Filing: 1967-12-26
•
Granted: 1969-10-07
•
Expires: 1987-12-26
Abstract
No abstract record available.
Inventors
- 👤 Marty E Sixt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:25
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/02; F16L21/00; F16L21/002; F16L21/005; F16L25/00; F16L25/14; Y; Y10; Y10S; Y10S285/00; Y10S285/903; Y10S4/00; Y10S4/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US528167A
Cited
US1306641A
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US658313A
Cited
GB190328632A
Cited
US935971A
Cited
US1668315A
Cited
US2315792A
Cited
US2366067A
Cited
FR908541A
Cited
US2507536A
Cited
US3167330A
Cited
US3276639A
Cited
US3239254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |