US2077907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for treating sewage, industrial wastes, and the like
Assignee: Underpinning & Foundation Comp
•
Filing: 1935-05-14
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Granted: 1937-04-20
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Expires: 1955-05-14
Abstract
No abstract record available.
Inventors
- 👤 Philip B Streander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:40
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/22; C02F3/223; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-04-19 | 1940-10-19 | 1941-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-04-19 | 1944-10-19 | 1945-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-04-19 | 1948-10-19 | 1949-04-20 | $7700.00 | Window Closed / Lapsed |