US3045895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas circulatory means
Assignee: CA Parsons and Co Ltd
•
Filing: 1958-01-22
•
Granted: 1962-07-24
•
Expires: 1978-01-22
Abstract
No abstract record available.
Inventors
- 👤 John R Bolter
- 👤 Richard H Beaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:01
CPC Classifications
G; G21; G21C; G21C15/00; G21C15/24; G21C15/253; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S415/00; Y10S415/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |