US2439435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moistureproof packaging
Assignee: Chicago Carton Co
•
Filing: 1944-07-07
•
Granted: 1948-04-13
•
Expires: 1964-07-07
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Richardson
- 👤 Walter T Ritter
- 👤 Robert O Ragan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:31
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/4279; B65D5/02; B65D5/06; B65D5/061; B65D5/064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US671759A
Cited
US915579A
Cited
GB191512070A
Cited
GB333543A
Cited
US1932240A
Cited
US2037428A
Cited
US2140178A
Cited
US2193521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-13 | 1951-10-13 | 1952-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-13 | 1955-10-13 | 1956-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-13 | 1959-10-13 | 1960-04-13 | $7700.00 | Window Closed / Lapsed |