Patent US2432887A successfully refreshed from Google Patents.
US2432887A
Expired / Lapsed
US
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Sewage disposal apparatus comprising a septic tank and an evaporating tank having a vent
Assignee: Individual
•
Filing: 1944-09-14
•
Granted: 1947-12-16
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Expires: 1964-09-14
Abstract
No abstract record available.
Inventors
- 👤 Lyman J Haviland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:30
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/28; C02F3/2866; C02F3/2886; Y; Y10; Y10S; Y10S203/00; Y10S203/05
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-15 | 1951-06-16 | 1951-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-15 | 1955-06-16 | 1955-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-15 | 1959-06-16 | 1959-12-16 | $7700.00 | Window Closed / Lapsed |