Patent US3511536A successfully refreshed from Google Patents.
US3511536A
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US
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Assignee: Tenryu Industries Co Ltd
•
Filing: 1968-08-28
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Granted: 1970-05-12
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Expires: 1988-08-28
Abstract
No abstract record available.
Inventors
- 👤 Sohei Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:39
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/02; A47C4/022; A47C11/00; A47C11/005; A47C4/03; Y; Y10; Y10T; Y10T403/00; Y10T403/38; Y10T403/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |