US2714892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural-chamber apparatus for treating objects
Assignee: RULON HENDERSON Inc
•
Filing: 1952-09-20
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Granted: 1955-08-09
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Expires: 1972-09-20
Abstract
No abstract record available.
Inventors
- 👤 Elwyn E Mendenhall
- 👤 Joseph K Rulon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:47
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/02; B08B3/022; A; A47; A47L; A47L15/00; A47L15/24; A47L15/241; A47L15/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US512683A
Cited
US1281864A
Cited
US1512918A
Cited
US1608828A
Cited
US1664637A
Cited
US2574058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |