US2412397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible tube pump
Assignee: Individual
•
Filing: 1943-12-31
•
Granted: 1946-12-10
•
Expires: 1963-12-31
Abstract
No abstract record available.
Inventors
- 👤 Lyndus E Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:30
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/082; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3936; Y10T24/394
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) | 1949-12-09 | 1950-06-10 | 1950-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-12-09 | 1954-06-10 | 1954-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-12-09 | 1958-06-10 | 1958-12-10 | $7700.00 | Window Closed / Lapsed |