US3495617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Float valve
Assignee: Individual
•
Filing: 1967-11-21
•
Granted: 1970-02-17
•
Expires: 1987-11-21
Abstract
No abstract record available.
Inventors
- 👤 Lothar Robert Zifferer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:13
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/20; F16K31/22; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7423; Y10T137/7426; Y10T137/7436
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US900329A
Cited
US959927A
Cited
US2492806A
Cited
US2680715A
Cited
US2726732A
Cited
US3230970A
Cited
US3211170A
Cited
US3275020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |