Patent US2487236A successfully refreshed from Google Patents.
US2487236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compartmented container having a rupturable partition
Assignee: Individual
•
Filing: 1947-12-31
•
Granted: 1949-11-08
•
Expires: 1967-12-31
Abstract
No abstract record available.
Inventors
- 👤 Alvin A Greenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:45
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/25; A; A61; A61C; A61C5/00; A61C5/60; A61C5/66; B01F33/251; Y; Y10; Y10S; Y10S366/00; Y10S366/602
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |