US3548615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Washing machine
Assignee: Hitachi Ltd
•
Filing: 1968-10-30
•
Granted: 1970-12-22
•
Expires: 1988-10-30
Abstract
No abstract record available.
Inventors
- 👤 Toshikazu Ohnishi
- 👤 Hiroki Utsumi
- 👤 Toru Tazawa
- 👤 Sigeto Yamane
- 👤 Katsumasa Matsuura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:00
CPC Classifications
D; D06; D06F; D06F34/00; D06F34/14; D06F34/16; D06F33/00; D06F33/30; D06F33/48; D06F2103/00; D06F2103/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2296261A
Cited
US2832208A
Cited
US3114705A
Cited
US3273361A
Cited
US3268791A
Cited
US3283547A
Cited
US3311237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |