US3229707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewer back-up release pressure pipe system
Assignee: Individual
•
Filing: 1962-08-27
•
Granted: 1966-01-18
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Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Suchan Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:09
CPC Classifications
E; E03; E03F; E03F7/00; E03F7/02; E03F7/04; Y; Y10; Y10T; Y10T137/00; Y10T137/402; Y10T137/4456; Y10T137/4463; Y10T137/4471; Y10T137/4478; Y10T137/4493; Y10T137/4576; Y10T137/4583; Y10T137/4606; Y10T137/6851; Y10T137/6966; Y10T137/6969; Y10T137/6988
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |