US3538520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lavatory sanitation bodies
Assignee: Madison Chemical Co Inc
•
Filing: 1967-12-26
•
Granted: 1970-11-10
•
Expires: 1987-12-26
Abstract
No abstract record available.
Inventors
- 👤 Seymour Leavitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:54
CPC Classifications
E; E03; E03D; E03D9/00; E03D9/02; E03D9/03; E03D9/032; A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/05; C; C11; C11D; C11D17/00; C11D17/0047; C11D17/0056; C11D3/00; C11D3/02; C11D3/04; C11D3/042; C11D3/06; C11D3/16; C11D3/20; C11D3/2075; E03D2009/024
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) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |