Patent US2733727A successfully refreshed from Google Patents.
US2733727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
trevaskis
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
•
Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:59
CPC Classifications
F; F41; F41A; F41A7/00; F41A7/02; F41A7/04; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/26; G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; G05D16/109; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/86944; Y10T137/86976
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1979062A
Cited
US2136318A
Cited
US2225082A
Cited
US2361773A
Cited
US2268764A
Cited
US2354608A
Cited
US2355758A
Cited
US2478002A
Cited
US2571311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |