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US3546902A
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US
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Pressure sealing device in a continuous high pressure steaming apparatus
Assignee: Sando Iron Works Co Ltd
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Filing: 1968-06-12
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Granted: 1970-12-15
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Expires: 1988-06-12
Abstract
No abstract record available.
Inventors
- 👤 Yoshikazu Sando
- 👤 Masao Takasu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:12
CPC Classifications
D; D06; D06B; D06B23/00; D06B23/14; D06B23/16; D06B23/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1633121A
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US3066518A
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US3260000A
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US3334908A
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US3299676A
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US3320776A
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US3367151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |