Patent US1389039A successfully refreshed from Google Patents.
US1389039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-compressor
Assignee: Individual
•
Filing: 1920-10-22
•
Granted: 1921-08-30
•
Expires: 1940-10-22
Abstract
No abstract record available.
Inventors
- 👤 Marshall A Estes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:33
CPC Classifications
F; F04; F04B; F04B29/00; F01; F01B; F01B3/00; F01B3/04; F01B3/06; F04B39/00; F04B39/0005; F04B39/0016; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18088; Y10T74/18296; Y10T74/18304; Y10T74/18312
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1924-08-29 | 1925-02-28 | 1925-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-08-29 | 1929-02-28 | 1929-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-08-29 | 1933-02-28 | 1933-08-30 | $7700.00 | Window Closed / Lapsed |