US3511746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easy opening heat sealed package
Assignee: US Plywood Champion Papers Inc
•
Filing: 1966-09-12
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Granted: 1970-05-12
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Expires: 1986-09-12
Abstract
No abstract record available.
Inventors
- 👤 John A Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:59
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/52; B65D75/58; B65D75/5855; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24777; Y10T428/24793; Y10T428/28; Y10T428/2813; Y10T428/31504; Y10T428/31786; Y10T428/3179
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2422725A
Cited
US2507107A
Cited
US3066848A
Cited
US3188265A
Cited
US3017302A
Cited
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 |