US2417546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air gun valve mechanism
Assignee: Liquidometer Corp
•
Filing: 1943-08-31
•
Granted: 1947-03-18
•
Expires: 1963-08-31
Abstract
No abstract record available.
Inventors
- 👤 Giers Clarence A De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US785387A
Cited
CH29854A
Cited
US1167895A
Cited
US1301948A
Cited
US1415467A
Cited
US2143296A
Cited
US2110326A
Cited
GB513013A
Cited
US2271151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |