US2696255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blank-forming method and mechanism for envelope making machines
Assignee: United States Envelope Co
•
Filing: 1948-07-02
•
Granted: 1954-12-07
•
Expires: 1968-07-02
Abstract
No abstract record available.
Inventors
- 👤 Vincent E Heywood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:24
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/14; B31B70/16; B31B2150/00; B31B2160/00; B31B2160/10; B31B2160/104; Y; Y10; Y10S; Y10S83/00; Y10S83/911; Y10T; Y10T83/00; Y10T83/04; Y10T83/0505; Y10T83/0524; Y10T83/0538; Y10T83/465; Y10T83/4691; Y10T83/4699; Y10T83/4705
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US317612A
Cited
US567460A
Cited
US81021A
Cited
US933540A
Cited
US1118515A
Cited
US1289084A
Cited
US1664413A
Cited
US2102170A
Cited
US2146946A
Cited
US2141574A
Cited
US2269714A
Cited
US2414772A
Cited
US2427223A
Cited
US2415428A
Cited
US2481934A
Cited
US2518011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |