US3413779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric cleaner
Assignee: Hitachi Ltd
•
Filing: 1966-12-13
•
Granted: 1968-12-03
•
Expires: 1986-12-13
Abstract
No abstract record available.
Inventors
- 👤 Takahashi Kimio
- 👤 Koike Ikuo
- 👤 Sagawa Kouichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:18
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/20; A47L9/28; A47L9/2836; A47L9/2842; A47L9/2857; A47L9/2894; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA614754A
Cited
DE698817C
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US2219567A
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US2211934A
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CH254781A
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US2482166A
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US2534578A
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US2664646A
Cited
US2721625A
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US3236032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |