US2758875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined center column and distributor for sewage treating apparatus
Assignee: Individual
•
Filing: 1953-07-06
•
Granted: 1956-08-14
•
Expires: 1973-07-06
Abstract
No abstract record available.
Inventors
- 👤 Loveless Compere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:37
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/04; C02F3/043; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190307412A
Cited
GB190708595A
Cited
GB190824948A
Cited
GB191027227A
Cited
FR424537A
Cited
US2355760A
Cited
US2588475A
Cited
US2727785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |