Patent US3230677A successfully refreshed from Google Patents.
US3230677A
Expired / Lapsed
US
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Sealing structure and related structures
Assignee: DS Brown Co Inc
•
Filing: 1963-03-26
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Granted: 1966-01-25
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Expires: 1983-03-26
Abstract
No abstract record available.
Inventors
- 👤 Howard R Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:57
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/54; E06B3/58; E06B3/62; E06B3/6205; E06B2003/6217; E06B2003/6226; E06B2003/625; E06B2003/6252; E06B2003/627; E06B2003/6276; E06B2003/6282
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2563378A
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US2606635A
Cited
DE957068C
Cited
US2878535A
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US3029481A
Cited
US3026582A
Cited
US3039232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |