US2612859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propelling and steering mechanism
Assignee: Individual
•
Filing: 1948-01-30
•
Granted: 1952-10-07
•
Expires: 1968-01-30
Abstract
No abstract record available.
Inventors
- 👤 Beryl I Billman
- 👤 Slack Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:28
CPC Classifications
B; B63; B63H; B63H16/00; B63H16/08; B63H16/12; B63H16/14; B63H2016/085
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US277667A
Cited
US502866A
Cited
GB189911359A
Cited
US637051A
Cited
US1133788A
Cited
US1234929A
Cited
US1370959A
Cited
US1825240A
Cited
US1826507A
Cited
US1961506A
Cited
US2145586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |