US2635774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper roll handling mechanism
Assignee: Doosan Bobcat North America Inc
•
Filing: 1949-06-23
•
Granted: 1953-04-21
•
Expires: 1969-06-23
Abstract
No abstract record available.
Inventors
- 👤 Backofen E Ryan
- 👤 Gunning Alfred Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:37
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/18; B66F9/184
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2281004A
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US2287469A
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US2407088A
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US2335572A
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US2468326A
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US2522128A
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US2457366A
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US2475367A
Cited
US2507583A
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US2571550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |