Patent US3056539A successfully refreshed from Google Patents.
US3056539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine compressor units
Assignee: Individual
•
Filing: 1959-02-03
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Granted: 1962-10-02
•
Expires: 1979-02-03
Abstract
No abstract record available.
Inventors
- 👤 Pullin Cyril George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:25
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/04; F02C6/06; F02C3/00; F02C3/32; F02C7/00; F02C7/12; F02C7/14; F02C7/141; F02C7/143
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) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |