Patent US2487620A successfully refreshed from Google Patents.
US2487620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desiccator
Assignee: Individual
•
Filing: 1946-03-08
•
Granted: 1949-11-08
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Expires: 1966-03-08
Abstract
No abstract record available.
Inventors
- 👤 Waller Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:25
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/24; B65D51/28; B65D51/30; B01; B01L; B01L1/00; B01L1/02; F; F26; F26B; F26B21/00; F26B21/30; F26B21/33; F26B21/331
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1628108A
Cited
US2315049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |