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US2161828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air compressor
Assignee: Sullivan Machinery Co
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Filing: 1935-12-27
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Granted: 1939-06-13
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Expires: 1955-12-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Lamberton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:40
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/22; F04B49/24; F04B49/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-06-12 | 1942-12-12 | 1943-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-06-12 | 1946-12-12 | 1947-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-06-12 | 1950-12-12 | 1951-06-13 | $7700.00 | Window Closed / Lapsed |