US2730360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction gripping mechanism for envelope machines and the like
Assignee: United States Envelope Co
•
Filing: 1951-06-19
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Granted: 1956-01-10
•
Expires: 1971-06-19
Abstract
No abstract record available.
Inventors
- 👤 Vincent E Heywood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:16
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/02; B31B70/022; B31B70/024; B31B2150/00; B31B2160/00; B31B2160/10; B31B70/26; B31B70/261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1856659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |