Patent US3559181A successfully refreshed from Google Patents.
US3301390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rupturable diaphragm
Assignee: Individual
•
Filing: 1965-10-11
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Granted: 1967-01-31
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Expires: 1985-10-11
Abstract
No abstract record available.
Inventors
- 👤 Jr William F Via
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/32; B65D81/3261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A RUPTURABLE PARTITION DISC FOR A CONTAINER FOR DIVIDING THE CONTAINER INTO TWO COMPARTMENTS, THE DISC BEING MADE OF A THIN SHEET OF METAL BONDED TO A SHEET OF PLASTIC MATERIAL, THE PLASTIC MATERIAL HAVING A SLOT EXTENDING THERETHROUGH SUBSTANTIALLY AT THE CENTER OF THE PARTITION.
Claim 2
Dependent Claim
46 words
A RUPTURABLE PARTITION DISC FOR A CONTAINER FOR DIVIDING THE CONTAINER INTO TWO COMPARTMENTS, THE DISC BEING MADE OF A THIN SHEET OF METAL BONDED TO A SHEET OF PLASTIC MATERIAL, THE PLASTIC MATERIAL HAVING A SLOT EXTENDING THERETHROUGH SUBSTANTIALLY AT THE CENTER OF THE PARTITION.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |