Patent US1234070A successfully refreshed from Google Patents.
US1234070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw-propeller.
Assignee: Individual
•
Filing: 1911-10-21
•
Granted: 1917-07-17
•
Expires: 1931-10-21
Abstract
No abstract record available.
Inventors
- 👤 George Henry Nitschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:28
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/46; B64C27/463; F; F05; F05B; F05B2260/00; F05B2260/96
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) | 1920-07-16 | 1921-01-15 | 1921-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-07-16 | 1925-01-15 | 1925-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-07-16 | 1929-01-15 | 1929-07-17 | $7700.00 | Window Closed / Lapsed |