US2720891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm valves
Assignee: Cameron Solutions Inc
•
Filing: 1951-03-05
•
Granted: 1955-10-18
•
Expires: 1971-03-05
Abstract
No abstract record available.
Inventors
- 👤 Clarence O Glasgow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:14
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/304; Y10T137/3052; Y10T137/3056; Y10T137/7287; Y10T137/7339; Y10T137/7349; Y10T137/7352; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836
Claims Analysis
Total Claims: 0
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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) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |