US2973007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulator
Assignee: Penn Controls Inc
•
Filing: 1958-07-11
•
Granted: 1961-02-28
•
Expires: 1978-07-11
Abstract
No abstract record available.
Inventors
- 👤 Wayne H Schutmaat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:15
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7825
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US481761A
Cited
US1313554A
Cited
US2481482A
Cited
US2713989A
Cited
US2761389A
Cited
US2737201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |