Patent US2729147A successfully refreshed from Google Patents.
US2729147A
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US
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Multiple synchronized pneumatic paper stock control device
Assignee: John W Bolton and Sons Inc
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Filing: 1953-01-26
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Granted: 1956-01-03
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Expires: 1973-01-26
Abstract
No abstract record available.
Inventors
- 👤 Bruno E Prevost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:19
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1773832A
Cited
US1945788A
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US1933814A
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US2024424A
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US2627788A
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US2666368A
Cited
US2642781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |