Patent DE945818C successfully refreshed from Google Patents.
US3457908A
Expired / Lapsed
US
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Assignee: Panasonic Holdings Corp
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Filing: 1967-12-18
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Granted: 1969-07-29
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Expires: 1987-12-18
Abstract
No abstract record available.
Inventors
- 👤 Masaru Hamatani
- 👤 Kanau Kawauchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:18
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02; A61F7/03; A61F2007/0001; A61F2007/0018; A61F2007/0024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3110301A
Cited
US3315658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |