US2593557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot controlled gas pressure regulator
Assignee: Airco Inc
•
Filing: 1947-09-26
•
Granted: 1952-04-22
•
Expires: 1967-09-26
Abstract
No abstract record available.
Inventors
- 👤 James K Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:57
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/16; G05D16/163; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7768; Y10T137/7781; Y10T137/7793
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US633662A
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US841469A
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US849018A
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US1071777A
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US1701865A
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US1891547A
Cited
GB403787A
Cited
US2082223A
Cited
US2067882A
Cited
US2257171A
Cited
US2277162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |