US2544867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety switch for covers of washing machines
Assignee: Motors Liquidation Co
•
Filing: 1944-11-04
•
Granted: 1951-03-13
•
Expires: 1964-11-04
Abstract
No abstract record available.
Inventors
- 👤 Harold B Wallis
- 👤 Duane R Neal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:16
CPC Classifications
D; D06; D06F; D06F37/00; D06F37/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2161604A
Cited
US2176954A
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US2302012A
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US2302836A
Cited
US2321641A
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US2233362A
Cited
US2355162A
Cited
US2325663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |