US2213610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat propulsion apparatus
Assignee: Individual
•
Filing: 1938-04-25
•
Granted: 1940-09-03
•
Expires: 1958-04-25
Abstract
No abstract record available.
Inventors
- 👤 Ronning Adolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:14
CPC Classifications
B; B63; B63H; B63H5/00; B63H5/07; B63H5/08; B63H5/10; B63H20/00; B63H20/24; B63H20/245; B63H5/16; B63H5/165; B63H2005/103; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2193
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) | 1943-09-03 | 1944-03-04 | 1944-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-09-03 | 1948-03-04 | 1948-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-09-03 | 1952-03-04 | 1952-09-03 | $7700.00 | Window Closed / Lapsed |