US2811905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Envelope manufacture
Assignee: United States Envelope Co
•
Filing: 1956-02-29
•
Granted: 1957-11-05
•
Expires: 1976-02-29
Abstract
No abstract record available.
Inventors
- 👤 Jr George H Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:04
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/60; B31B70/62; B31B2150/00; B31B2160/00; B31B2160/10; B31B2160/104
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1807867A
Cited
US1943985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |