US2686652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve apparatus
Assignee: VIKING VALVE Co
•
Filing: 1951-01-29
•
Granted: 1954-08-17
•
Expires: 1971-01-29
Abstract
No abstract record available.
Inventors
- 👤 George E Carlson
- 👤 Bader J Parker
- 👤 Nathan B Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:59
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/44; B65D83/48; B65D83/16; B65D83/162; B65D83/22
Claims Analysis
Total Claims: 0
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US2612293A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |