Patent US6436143B1 successfully refreshed from Google Patents.
US2064053A
Expired / Lapsed
US
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Automatic formula control for washing machines
Assignee: American Laundry Machinery Co
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Filing: 1931-07-07
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Granted: 1936-12-15
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Expires: 1951-07-07
Abstract
No abstract record available.
Inventors
- 👤 Balzer Fred
- 👤 Gilbert B Knapmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:07
CPC Classifications
D; D06; D06F; D06F33/00; D06F33/04; D06F33/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86445
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) | 1939-12-15 | 1940-06-15 | 1940-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-12-15 | 1944-06-15 | 1944-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-12-15 | 1948-06-15 | 1948-12-15 | $7700.00 | Window Closed / Lapsed |