US2665907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air control mechanism for pneumatic sheet separators
Assignee: Weldon Tool Co
•
Filing: 1950-09-06
•
Granted: 1954-01-12
•
Expires: 1970-09-06
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Ribich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:28
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/08; B65H3/0808; B65H3/0891
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1254666A
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US1502663A
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US1689878A
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US1618632A
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US1773266A
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US1731633A
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US1801181A
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US2342190A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |