US1876642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starting gear
Assignee: JOHN M HARPER
•
Filing: 1931-03-18
•
Granted: 1932-09-13
•
Expires: 1951-03-18
Abstract
No abstract record available.
Inventors
- 👤 Edwin A Doub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:56
CPC Classifications
A; A01; A01D; A01D57/00; A01D57/24; F; F02; F02N; F02N15/00; F02N15/02; F02N15/04; F02N15/06; F02N15/062; F02N2015/061; Y; Y10; Y10T; Y10T74/00; Y10T74/13; Y10T74/139
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) | 1935-09-13 | 1936-03-14 | 1936-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-09-13 | 1940-03-14 | 1940-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-09-13 | 1944-03-14 | 1944-09-13 | $7700.00 | Window Closed / Lapsed |