US1611030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary air compressor
Assignee: Individual
•
Filing: 1925-02-13
•
Granted: 1926-12-14
•
Expires: 1945-02-13
Abstract
No abstract record available.
Inventors
- 👤 Hele-Shaw Henry Selby
- 👤 Beacham Thomas Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:19
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/06; F04B39/064; F04B27/00; F04B27/04; F04B27/0404; F04B27/0442; F04B27/0451; F04B27/0456; F04B27/06; F04B27/0606; F04B27/0612; F04B39/02; F04B39/0207; F04B41/00; F04B41/06
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) | 1929-12-13 | 1930-06-14 | 1930-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-12-13 | 1934-06-14 | 1934-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-12-13 | 1938-06-14 | 1938-12-14 | $7700.00 | Window Closed / Lapsed |