US2670950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring band
Assignee: American Steel Foundries
•
Filing: 1950-07-14
•
Granted: 1954-03-02
•
Expires: 1970-07-14
Abstract
No abstract record available.
Inventors
- 👤 Harold C Keysor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:30
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/18; F16F1/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49607; Y10T29/49826; Y10T29/49908; Y10T29/49925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US245097A
Cited
US2021173A
Cited
US2026404A
Cited
US2106411A
Cited
US2297941A
Cited
US2253255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |