US2979067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulator
Assignee: Maxitrol Co
•
Filing: 1953-09-21
•
Granted: 1961-04-11
•
Expires: 1973-09-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank Kern
- 👤 Jr Charles Stang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:49
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; G05D16/0658; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0402; Y10T137/0491; Y10T137/0497; Y10T137/598; Y10T137/599; Y10T137/60; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7825
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US94748A
Cited
US198353A
Cited
US218325A
Cited
US731255A
Cited
US966513A
Cited
US1043412A
Cited
US1518775A
Cited
US2094264A
Cited
US2223509A
Cited
US2447067A
Cited
US2662348A
Cited
US2660834A
Cited
US2715416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |