Patent US2906811A successfully refreshed from Google Patents.
Patent US2098677A successfully refreshed from Google Patents.
US2098677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump testing apparatus
Assignee: JOSEPH WEIDENHOFF Inc
•
Filing: 1935-05-23
•
Granted: 1937-11-09
•
Expires: 1955-05-23
Abstract
No abstract record available.
Inventors
- 👤 Erwin J Saballus
- 👤 John H O Saballus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:11
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/0088
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) | 1940-11-08 | 1941-05-10 | 1941-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-11-08 | 1945-05-10 | 1945-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-11-08 | 1949-05-10 | 1949-11-09 | $7700.00 | Window Closed / Lapsed |