US2807684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversing switch
Assignee: Doosan Bobcat North America Inc
•
Filing: 1955-09-07
•
Granted: 1957-09-24
•
Expires: 1975-09-07
Abstract
No abstract record available.
Inventors
- 👤 Edgar H Ayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:41
CPC Classifications
H; H01; H01H; H01H21/00; H01H21/54; H01H21/58; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18856; Y10T74/18864
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US365585A
Cited
US707843A
Cited
US1293532A
Cited
US1474013A
Cited
US1753975A
Cited
US2289882A
Cited
GB551221A
Cited
US2448444A
Cited
US2483122A
Cited
US2641663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |