US3503607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic document stacking device
Assignee: Unisys Corp
•
Filing: 1967-12-27
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Granted: 1970-03-31
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Expires: 1987-12-27
Abstract
No abstract record available.
Inventors
- 👤 Richard S Gluskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:42
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/26; B65H29/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3243181A
Cited
US3405977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |