Patent US1734290A successfully refreshed from Google Patents.
Patent US2728407A successfully refreshed from Google Patents.
US2728407A
Expired / Lapsed
US
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Dehydrating apparatus
Assignee: Specialties Development Corp
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Filing: 1952-04-09
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Granted: 1955-12-27
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Expires: 1972-04-09
Abstract
No abstract record available.
Inventors
- 👤 Donald R Squier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:20
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; Y; Y10; Y10S; Y10S210/00; Y10S210/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A CARTIDGE CASING OF THE CLASS DESCRIBED COMPRISING A TUBULAR HOUSING, AN INLET FITTING AT ONE END OF SAID HOUSING, AN OUTLET FITTING AT THE OTHER END OF SAID HOUSING, ONE OF SAID FITTINGS HAVING A BORE IN COAXIAL ALIGNMENT WITH SAID HOUSING AND A LATERAL PASSAGEWAY COMMUNICATING WITH THE BORE THEREOF AND SAID LAST MENTIONED FITTING, AND A REMOVABLY SECURED CLOSURE INCLUDING MEANS FOR SEALING SAID BORE, SAID CLOSURE HAVING A TUBULAR SLEEVE OF SMALLER OUTER DIAMETER THAN THE DIAMETER OF SAID BORE PROVIDED WITH A PLURALITY OF APERTURES FOR ESTABLISHING COMMUNICATION BETWEEN THE INTERIOR OF SAID TUBULAR SLEEVE AND SAID LATERAL PASSAGEWAY, AND SAID CLOSURE HAVING A PASSAGEWAY
Claim 2
Dependent Claim
110 words
A CARTIDGE CASING OF THE CLASS DESCRIBED COMPRISING A TUBULAR HOUSING, AN INLET FITTING AT ONE END OF SAID HOUSING, AN OUTLET FITTING AT THE OTHER END OF SAID HOUSING, ONE OF SAID FITTINGS HAVING A BORE IN COAXIAL ALIGNMENT WITH SAID HOUSING AND A LATERAL PASSAGEWAY COMMUNICATING WITH THE BORE THEREOF AND SAID LAST MENTIONED FITTING, AND A REMOVABLY SECURED CLOSURE INCLUDING MEANS FOR SEALING SAID BORE, SAID CLOSURE HAVING A TUBULAR SLEEVE OF SMALLER OUTER DIAMETER THAN THE DIAMETER OF SAID BORE PROVIDED WITH A PLURALITY OF APERTURES FOR ESTABLISHING COMMUNICATION BETWEEN THE INTERIOR OF SAID TUBULAR SLEEVE AND SAID LATERAL PASSAGEWAY, AND SAID CLOSURE HAVING A PASSAGEWAY
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |