US2489781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal
Assignee: Chicago Rawhide Manufacturing Co Inc
•
Filing: 1947-02-14
•
Granted: 1949-11-29
•
Expires: 1967-02-14
Abstract
No abstract record available.
Inventors
- 👤 Robert O Isenbarger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:56
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; Y; Y10; Y10S; Y10S264/00; Y10S264/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1886147A
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US2015979A
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US2287207A
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US2311494A
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US2342955A
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US2358830A
Cited
US2429953A
Cited
US2444713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |