Patent US1796704A successfully refreshed from Google Patents.
US1796704A
Expired / Lapsed
US
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Cleaning machine
Assignee: ROTERKLEEN Manufacturing Co
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Filing: 1929-03-19
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Granted: 1931-03-17
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Expires: 1949-03-19
Abstract
No abstract record available.
Inventors
- 👤 Howard D Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:27
CPC Classifications
A; A63; A63B; A63B47/00; A63B47/04; A63B2047/046
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) | 1934-03-16 | 1934-09-15 | 1935-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-03-16 | 1938-09-15 | 1939-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-03-16 | 1942-09-15 | 1943-03-17 | $7700.00 | Window Closed / Lapsed |