US2252052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sublimating apparatus
Assignee: Hartford National Bank and Trust Co
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Filing: 1939-10-06
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Granted: 1941-08-12
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Expires: 1959-10-06
Abstract
No abstract record available.
Inventors
- 👤 Hendrik Johannes Meerka Embden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:20
CPC Classifications
B; B01; B01D; B01D7/00; C; C22; C22B; C22B26/00; C22B26/20; C22B26/22; C22B35/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-08-11 | 1945-02-10 | 1945-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-11 | 1949-02-10 | 1949-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-11 | 1953-02-10 | 1953-08-12 | $7700.00 | Window Closed / Lapsed |