US3511436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easy opening heat sealed package
Assignee: US Plywood Champion Papers Inc
•
Filing: 1966-09-12
•
Granted: 1970-05-12
•
Expires: 1986-09-12
Abstract
No abstract record available.
Inventors
- 👤 Robert G Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:37
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/18; B65D33/22; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1341; Y10T428/24; Y10T428/24752; Y10T428/24802; Y10T428/24851; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31587
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3278109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |