US2674337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underground drainage and disposal system
Assignee: Individual
•
Filing: 1950-11-03
•
Granted: 1954-04-06
•
Expires: 1970-11-03
Abstract
No abstract record available.
Inventors
- 👤 Clark R Noe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:37
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/04; C02F3/046; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US237796A
Cited
US870433A
Cited
US1155970A
Cited
US1536000A
Cited
US2002301A
Cited
US2386020A
Cited
US2518292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |