Patent US3920902A successfully refreshed from Google Patents.
Patent US1925169A successfully refreshed from Google Patents.
US1925169A
Expired / Lapsed
US
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Boom attachment for tractors
Assignee: Individual
•
Filing: 1930-11-26
•
Granted: 1933-09-05
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Expires: 1950-11-26
Abstract
No abstract record available.
Inventors
- 👤 Berg Magnus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:34
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C23/44; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357; Y; Y10; Y10S; Y10S414/00; Y10S414/123
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) | 1936-09-04 | 1937-03-06 | 1937-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-09-04 | 1941-03-06 | 1941-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-09-04 | 1945-03-06 | 1945-09-05 | $7700.00 | Window Closed / Lapsed |