US2816514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibratory pump
Assignee: DESIGNERS FOR INDUSTRY Inc
•
Filing: 1954-09-17
•
Granted: 1957-12-17
•
Expires: 1974-09-17
Abstract
No abstract record available.
Inventors
- 👤 Charles E Freese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:08
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US453277A
Cited
US991708A
Cited
US1922196A
Cited
US2562552A
Cited
US2456133A
Cited
US2471796A
Cited
US2659310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |