US2572980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet stacking device
Assignee: W J BRADFORD PAPER Co
•
Filing: 1948-03-10
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Granted: 1951-10-30
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Expires: 1968-03-10
Abstract
No abstract record available.
Inventors
- 👤 William J Bradford
- 👤 Wahl Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:07
CPC Classifications
B; B65; B65H; B65H31/00; B65H31/30; B65H31/3009; B65H31/3018; B65H31/3054; B65H2301/00; B65H2301/40; B65H2301/42; B65H2301/422; B65H2301/4226; B65H2301/42261; B65H2301/422615
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1086700A
Cited
US1253025A
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FR485736A
Cited
FR500627A
Cited
US1365741A
Cited
US1600958A
Cited
US1700990A
Cited
US2273476A
Cited
US2414059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |