US2849897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive for a step-up or step-down gear
Assignee: Individual
•
Filing: 1956-11-06
•
Granted: 1958-09-02
•
Expires: 1976-11-06
Abstract
No abstract record available.
Inventors
- 👤 Walma Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:29
CPC Classifications
G; G04; G04B; G04B13/00; F; F16; F16H; F16H1/00; F16H1/28; F16H1/32; F16H1/321; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19633; Y10T74/1987; Y10T74/19893; Y10T74/19907; Y10T74/19949; Y10T74/19963; Y10T74/19967; Y10T74/21; Y10T74/211
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |