US2654434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drying excavations
Assignee: PACIFIC PUMPING CO
•
Filing: 1950-06-10
•
Granted: 1953-10-06
•
Expires: 1970-06-10
Abstract
No abstract record available.
Inventors
- 👤 John T Culleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:27
CPC Classifications
E; E02; E02D; E02D19/00; E02D19/06; E02D19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US568522A
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US1672309A
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US1593445A
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US1779483A
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US2101833A
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US2176540A
Cited
US2533028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |