US3070280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sealing envelopes
Assignee: RICHMOND PAPER Co
•
Filing: 1960-06-09
•
Granted: 1962-12-25
•
Expires: 1980-06-09
Abstract
No abstract record available.
Inventors
- 👤 Robert H Richmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:46
CPC Classifications
B; B65; B65D; B65D27/00; B65D27/12; B65D27/14; B65D27/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1800143A
Cited
US1992152A
Cited
US2191704A
Cited
US2400406A
Cited
US2536773A
Cited
US2722361A
Cited
US2770411A
Cited
US2859907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |