Patent US2419693A successfully refreshed from Google Patents.
US2419693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage disposal system
Assignee: Austin Co
•
Filing: 1943-01-29
•
Granted: 1947-04-29
•
Expires: 1963-01-29
Abstract
No abstract record available.
Inventors
- 👤 Short Leo Charles
- 👤 Ewald A Iwen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:39
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/04; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US233978A
Cited
US303927A
Cited
US150478A
Cited
US2168208A
Cited
US2038866A
Cited
US2097779A
Cited
US2090405A
Cited
GB475354A
Cited
US2154132A
Cited
US2141979A
Cited
US2142196A
Cited
US2283166A
Cited
US2366917A
Cited
US2317782A
Cited
US2340842A
Cited
US2355640A
Cited
US2355760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-28 | 1950-10-28 | 1951-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-28 | 1954-10-28 | 1955-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-28 | 1958-10-28 | 1959-04-29 | $7700.00 | Window Closed / Lapsed |