US2881780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water inlet control system
Assignee: Whirlpool Corp
•
Filing: 1956-05-22
•
Granted: 1959-04-14
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Expires: 1976-05-22
Abstract
No abstract record available.
Inventors
- 👤 Robert E Johnson
- 👤 Edward C Levit
- 👤 James F Workman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:48
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42; A47L15/4214; A47L15/4217; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2774; Y10T137/3149; Y10T137/3185; Y10T137/3222; Y10T137/6416; Y10T137/8593; Y10T137/87265; Y10T137/87338
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1698342A
Cited
US1053537A
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US1276659A
Cited
US1779165A
Cited
US1999505A
Cited
US2506336A
Cited
US2651318A
Cited
US2635064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |