Patent US2570047A successfully refreshed from Google Patents.
US2570047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag bottomer
Assignee: ST Regis Paper Co
•
Filing: 1948-09-11
•
Granted: 1951-10-02
•
Expires: 1968-09-11
Abstract
No abstract record available.
Inventors
- 👤 Edwin E Burroughs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:24
CPC Classifications
B; B31; B31D; B31D5/00; B31D5/0034; B31B; B31B2150/00; B31B2150/001; B31B2150/0014; B31B2150/003; B31B2160/00; B31B2160/20; B31B70/00; B31B70/003; B31B70/74; B31B70/81; B31B70/84; B31B70/844; Y; Y10; Y10S; Y10S493/00; Y10S493/916; Y10S493/936
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |