US3424012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction gear
Assignee: POLYPRODUKTE AG
•
Filing: 1966-11-07
•
Granted: 1969-01-28
•
Expires: 1986-11-07
Abstract
No abstract record available.
Inventors
- 👤 Georg Hirmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:34
CPC Classifications
F; F16; F16H; F16H19/00; F16H19/02; F16H19/025; B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/40; B23Q5/00; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB710135A
Cited
US2808498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |