US2761472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure fluctuation arrester
Assignee: Individual
•
Filing: 1952-07-09
•
Granted: 1956-09-04
•
Expires: 1972-07-09
Abstract
No abstract record available.
Inventors
- 👤 Harbich Franz
- 👤 Pohl Arnold Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:56
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F16L55/053
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2088042A
Cited
US1891636A
Cited
US2198192A
Cited
US2342356A
Cited
US2371633A
Cited
US2550892A
Cited
US2604118A
Cited
US2630834A
Cited
US2546648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |