Patent US2221178A successfully refreshed from Google Patents.
Patent US3495302A successfully refreshed from Google Patents.
US3495302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machines for injecting plastics material into a mound
Assignee: Post Office
•
Filing: 1965-03-22
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Granted: 1970-02-17
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Expires: 1985-03-22
Abstract
No abstract record available.
Inventors
- 👤 Bernard Ash
- 👤 Geoffrey Hugh Crofton Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:37
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/53
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1810126A
Cited
US2110570A
Cited
US2296295A
Cited
US2337550A
Cited
US2296296A
Cited
US2569919A
Cited
US2620512A
Cited
US3009197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |