Patent US5630754A successfully refreshed from Google Patents.
Patent US3500726A successfully refreshed from Google Patents.
US3500726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for converting strip material into bags
Assignee: Riegel Paper Corp
•
Filing: 1968-02-20
•
Granted: 1970-03-17
•
Expires: 1988-02-20
Abstract
No abstract record available.
Inventors
- 👤 Robert F Lense
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:43
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/14; B31B70/16; B31B2160/00; B31B2160/10; B31B2160/106; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4458; Y10T83/4539; Y10T83/4541
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2854899A
Cited
US3263542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |