US2852252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet material feed control means and method
Assignee: Individual
•
Filing: 1952-06-13
•
Granted: 1958-09-16
•
Expires: 1972-06-13
Abstract
No abstract record available.
Inventors
- 👤 Paul A Sperry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:41
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/08; B41F15/10; B65; B65H; B65H23/00; B65H23/04; B65H23/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US497953A
Cited
US670107A
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US1011508A
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US974607A
Cited
US1855525A
Cited
US2120735A
Cited
US2158027A
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US2240249A
Cited
US2521691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |