US2975623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating means for combination washer-dryer
Assignee: Whirlpool Corp
•
Filing: 1957-07-29
•
Granted: 1961-03-21
•
Expires: 1977-07-29
Abstract
No abstract record available.
Inventors
- 👤 Robert L Eichhorn
- 👤 Don R Cronk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:13
CPC Classifications
D; D06; D06F; D06F25/00; D06F58/00; D06F58/20; D06F58/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1234498A
Cited
FR580319A
Cited
US1799649A
Cited
GB471211A
Cited
US2193495A
Cited
US2307254A
Cited
US2468550A
Cited
US2827783A
Cited
CH277957A
Cited
US2777313A
Cited
US2797567A
Cited
US2839128A
Cited
GB761989A
Cited
US2834405A
Cited
FR1137092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |