Patent US1898064A successfully refreshed from Google Patents.
US3545168A
Expired / Lapsed
US
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Sealing of tubes of plastic material
Assignee: ES Perry Ltd
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Filing: 1967-10-30
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Granted: 1970-12-08
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Expires: 1987-10-30
Abstract
No abstract record available.
Inventors
- 👤 William John Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:46
CPC Classifications
B; B29; B29C; B29C57/00; B29C57/10; B29C31/00; B29C31/002; A; A63; A63H; A63H33/00; A63H33/22; B43; B43K; B43K15/00; B43K15/02; G; G02; G02B; G02B27/00; G02B27/02; G02B27/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2449478A
Cited
US2876496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |