US2438787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper bag making machinery
Assignee: ES&A Robinson Canada Ltd
•
Filing: 1944-05-23
•
Granted: 1948-03-30
•
Expires: 1964-05-23
Abstract
No abstract record available.
Inventors
- 👤 Nicholas John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:40
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/60; B31B70/62; B31B2160/00; B31B2160/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1170383A
Cited
US2049514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-30 | 1951-09-29 | 1952-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-30 | 1955-09-29 | 1956-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-30 | 1959-09-29 | 1960-03-30 | $7700.00 | Window Closed / Lapsed |