US3482326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Freeze drying process
Assignee: MARSHALL L BREWSTER
•
Filing: 1967-05-19
•
Granted: 1969-12-09
•
Expires: 1987-05-19
Abstract
No abstract record available.
Inventors
- 👤 Marshall L Brewster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:50
CPC Classifications
F; F26; F26B; F26B5/00; F26B5/04; F26B5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US817008A
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US1031334A
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US2284848A
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US2930139A
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US3170308A
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US3289314A
Cited
US3328847A
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US3358379A
Cited
US3321932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |