US2733728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
sampselle
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 19:34
CPC Classifications
F; F16; F16K; F16K24/00; Y; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/4857; Y10T137/4874; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/8593; Y10T137/86236
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US288901A
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CH103570A
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US1780605A
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US1949364A
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US2056828A
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US2236347A
Cited
US2301821A
Cited
US2439887A
Cited
US2384628A
Cited
US2539663A
Cited
US2460159A
Cited
US2537266A
Cited
US2588869A
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 |