Patent US2987007A successfully refreshed from Google Patents.
US2987007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injector
Assignee: US Filter Wallace and Tiernan Inc
•
Filing: 1957-07-30
•
Granted: 1961-06-06
•
Expires: 1977-07-30
Abstract
No abstract record available.
Inventors
- 👤 William C Conkling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:34
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46; F04F5/461
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US409046A
Cited
US1421841A
Cited
US2300642A
Cited
US2327637A
Cited
US2369151A
Cited
US2457388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |