US2689483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for varying the circumference of working faces
Assignee: Individual
•
Filing: 1952-01-18
•
Granted: 1954-09-21
•
Expires: 1972-01-18
Abstract
No abstract record available.
Inventors
- 👤 Senna Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:18
CPC Classifications
B; B21; B21D; B21D7/00; B21D7/02; F; F16; F16H; F16H55/00; F16H55/32; F16H55/36; F16H55/50; F16H55/52; F16H55/54; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7018; Y10T403/7021; Y10T403/7041; Y10T403/7047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE57108C
Cited
US411364A
Cited
US596246A
Cited
US607615A
Cited
GB190929517A
Cited
US1371212A
Cited
US2258225A
Cited
US2575582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |