US2148447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for disposing of sewage waste
Assignee: Individual
•
Filing: 1933-08-26
•
Granted: 1939-02-28
•
Expires: 1953-08-26
Abstract
No abstract record available.
Inventors
- 👤 William A Dundas
- 👤 Harrington Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:43
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/001; C; C02; C02F; C02F11/00; C02F11/12; C02F11/13; F23G5/00; F23G5/50; Y; Y10; Y10S; Y10S241/00; Y10S241/38
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) | 1942-02-27 | 1942-08-29 | 1943-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-27 | 1946-08-29 | 1947-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-27 | 1950-08-29 | 1951-02-28 | $7700.00 | Window Closed / Lapsed |