US3532468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure sulfur withdrawal system
Assignee: Parsons Government Services Inc
•
Filing: 1968-06-10
•
Granted: 1970-10-06
•
Expires: 1988-06-10
Abstract
No abstract record available.
Inventors
- 👤 David K Beavon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:37
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/0404; C01B17/0447; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2413714A
Cited
US3170766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |