US2643497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carton opening, filling, and closing mechanism
Assignee: Individual
•
Filing: 1949-10-08
•
Granted: 1953-06-30
•
Expires: 1969-10-08
Abstract
No abstract record available.
Inventors
- 👤 Robert O Woelfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:41
CPC Classifications
B; B65; B65B; B65B43/00; B65B43/26; B65B43/32; B65B43/325; B65B43/12; B65B43/14; B65B43/145; B31; B31B; B31B2100/00; B31B2120/00; B31B2120/30; B31B50/00; B31B50/004; B31B50/0044; B31B50/74; B31B50/76; B31B50/78; B31B50/784
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1094139A
Cited
US1527030A
Cited
US1824401A
Cited
US1922412A
Cited
US2097428A
Cited
US2114624A
Cited
US2206203A
Cited
US2318208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |