US2896440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: CARL COLLIN WHISLER
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Filing: 1957-11-12
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Granted: 1959-07-28
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Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Fred Romsteadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:47
CPC Classifications
B; B60; B60B; B60B7/00; B60B7/16; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/554; Y10T70/5562; Y10T70/5575; Y10T70/558; Y10T70/5889; Y10T70/5982
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2124035A
Cited
US2807157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |