US2807136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston type compressor
Assignee: Individual
•
Filing: 1951-04-23
•
Granted: 1957-09-24
•
Expires: 1971-04-23
Abstract
No abstract record available.
Inventors
- 👤 Berry W Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:59
CPC Classifications
F; F04; F04B; F04B35/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2200892A
Cited
US2246701A
Cited
US2232631A
Cited
GB595547A
Cited
US2431563A
Cited
US2467513A
Cited
US2512254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |