US3521890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick change lip seal cartridge device
Assignee: ATK Launch Systems LLC
•
Filing: 1968-10-07
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Granted: 1970-07-28
•
Expires: 1988-10-07
Abstract
No abstract record available.
Inventors
- 👤 Robert E Holmes
- 👤 Robert O Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:32
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/3208; F16J15/3268; F16J15/3272; F16J15/40; Y; Y10; Y10S; Y10S277/00; Y10S277/904; Y10S277/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US845701A
Cited
US1404299A
Cited
US2049774A
Cited
US2340022A
Cited
US2565923A
Cited
US2866670A
Cited
US3164420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |