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Patent US3241726A successfully refreshed from Google Patents.
US3241726A
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US
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Resilient valved diaphragm for comminuted material dispenser
Assignee: Individual
•
Filing: 1964-06-08
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Granted: 1966-03-22
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Expires: 1984-06-08
Abstract
No abstract record available.
Inventors
- 👤 Frank R Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:35
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/20; B65D47/2018; B65D47/2031
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1505442A
Cited
US1996156A
Cited
US2143661A
Cited
US2679954A
Cited
US2804240A
Cited
US3105618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |