US2981420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piling machine for sheet-like materials
Assignee: SVEN LEIJONMARCK
•
Filing: 1957-07-09
•
Granted: 1961-04-25
•
Expires: 1977-07-09
Abstract
No abstract record available.
Inventors
- 👤 Karl L B Johanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:58
CPC Classifications
B; B65; B65H; B65H29/00; B65H2701/00; B65H2701/10; B65H2701/17; B65H2701/176; B65H2701/1762
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2205767A
Cited
US2397720A
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US2686603A
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US2667259A
Cited
US2769558A
Cited
US2794636A
Cited
US2861702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |