US2991003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston and compressor structure
Assignee: Individual
•
Filing: 1957-01-30
•
Granted: 1961-07-04
•
Expires: 1977-01-30
Abstract
No abstract record available.
Inventors
- 👤 Robert S Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:49
CPC Classifications
F; F16; F16J; F16J1/00; F16J1/005; F16J1/006; F01; F01L; F01L25/00; F01L25/08; F04; F04B; F04B25/00; F04B39/00; F04B39/04; F04B39/041; F04B39/042; F04B39/12; F04B39/126; F04B9/00; F04B9/08; F04B9/10; F04B9/109; F04B9/111; F04B9/113; F04B9/117; F04B9/1172; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/944; Y10S277/945; Y10S277/946
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US261605A
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US1081784A
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US2315798A
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US2311240A
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US2437341A
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US2791370A
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US2819835A
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US2826149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |