US2731807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
allyne
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:25
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/20; B60H; B60H1/00; B60H1/32; B60H1/3235; F; F25; F25D; F25D3/00; F25D3/12; F25D3/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1093075A
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US1859613A
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US1989609A
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US1949735A
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US2095780A
Cited
US2124981A
Cited
US2193185A
Cited
US2120299A
Cited
US2182449A
Cited
US2195924A
Cited
US2226755A
Cited
US2398273A
Cited
US2553262A
Cited
US2530598A
Cited
US2589031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |