US3428022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm rupturing device
Assignee: Sunoco Inc
•
Filing: 1966-09-30
•
Granted: 1969-02-18
•
Expires: 1986-09-30
Abstract
No abstract record available.
Inventors
- 👤 Robert E Ledley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:36
CPC Classifications
G; G01; G01M; G01M9/00; G01M9/02; G01M9/04; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10T; Y10T137/00; Y10T137/1624; Y10T83/00; Y10T83/869; Y10T83/8776; Y10T83/8782
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2824444A
Cited
US2998719A
Cited
US2977787A
Cited
US2966793A
Cited
US2958716A
Cited
US3180524A
Cited
US3145573A
Cited
US3262757A
Cited
US3266668A
Cited
US3307918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |