Patent US2557128A successfully refreshed from Google Patents.
US2557128A
Expired / Lapsed
US
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Pulsating discharge power gas generator with pressure-actuated inlet and outlet valves
Assignee: Individual
•
Filing: 1945-01-29
•
Granted: 1951-06-19
•
Expires: 1965-01-29
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Magill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:01
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/02; F02K7/06; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7832; Y10T137/8593; Y10T137/87917; Y10T137/88054
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |