Patent US2379271A successfully refreshed from Google Patents.
US2379271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating unit
Assignee: Individual
•
Filing: 1944-05-19
•
Granted: 1945-06-26
•
Expires: 1964-05-19
Abstract
No abstract record available.
Inventors
- 👤 Marley E Bechtel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:27
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/26; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8855; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9425; Y10T83/9457; Y10T83/9473; Y10T83/9476
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-06-25 | 1948-12-25 | 1949-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-06-25 | 1952-12-25 | 1953-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-06-25 | 1956-12-25 | 1957-06-26 | $7700.00 | Window Closed / Lapsed |