US3411641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for handling sheets
Assignee: Dean Research Corp
•
Filing: 1967-12-01
•
Granted: 1968-11-19
•
Expires: 1987-12-01
Abstract
No abstract record available.
Inventors
- 👤 George A Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:37
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/74; B65G47/90; B65G47/91; B66; B66C; B66C1/00; B66C1/02; B66C1/0256; B66C1/0275
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2776831A
Cited
US3289860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |