US2731885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
nolan
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
2026-10-29 19:13
CPC Classifications
F; F41; F41F; F41F3/00; F41F3/04; F41F3/06; B; B64; B64D; B64D1/00; B64D1/02; B64D1/04; B64D1/06; F02; F02K; F02K9/00; F02K9/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB428934A
Cited
US2105055A
Cited
US2585030A
Cited
US2409210A
Cited
US2608132A
Cited
US2599555A
Cited
US2481542A
Cited
US2634656A
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 |