US2830671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desiccator
Assignee: W L MAXSON CORP
•
Filing: 1955-09-28
•
Granted: 1958-04-15
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Expires: 1975-09-28
Abstract
No abstract record available.
Inventors
- 👤 Azor D Robbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:02
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F2003/1458
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |