US1420845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
johhston
Assignee: —
•
Filing: —
•
Granted: 1922-06-27
•
Expires: 1939-06-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:38
CPC Classifications
F; F04; F04B; F04B27/00; F04B27/04; F04B27/06; F03; F03D; F03D9/00; F03D9/10; F03D9/17; F03D9/20; F03D9/28; F04B17/00; F04B17/02; F04B27/0404; F04B27/0442; F04B3/00; F04B39/00; F04B39/0005; F04B39/0016; F05; F05B; F05B2210/00; F05B2210/16; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y02E60/00; Y02E60/16; Y02E70/00; Y02E70/30
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) | 1925-06-26 | 1925-12-26 | 1926-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-06-26 | 1929-12-26 | 1930-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-06-26 | 1933-12-26 | 1934-06-27 | $7700.00 | Window Closed / Lapsed |