Patent US3531829A successfully refreshed from Google Patents.
US3531829A
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US
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Apparatus for manufacturing sheathed flexible sealing members
Assignee: Dow Silicones Corp
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Filing: 1968-10-21
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Granted: 1970-10-06
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Expires: 1988-10-21
Abstract
No abstract record available.
Inventors
- 👤 Max Skobel
- 👤 Alexander C Hetherington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:40
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0053; B29C; B29C48/00; B29C48/03; B29C48/06; B29C48/07; B29C48/08; B29C48/09; B29C48/12; B29C48/15; B29C48/154; B29C48/25; B29C48/30; B29C48/32; B29C53/00; B29C53/36; B29L; B29L2031/00; B29L2031/26
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) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |