Patent US724554A successfully refreshed from Google Patents.
US724554A
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Apparatus for preserving perishable food products.
Assignee: ELMER A SPERRY
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Filing: 1901-02-09
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Granted: 1903-04-07
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Expires: 1921-02-09
Abstract
No abstract record available.
Inventors
- 👤 Charles E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:34
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/20; A23B2/22
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) | 1906-04-06 | 1906-10-06 | 1907-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-04-06 | 1910-10-06 | 1911-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-04-06 | 1914-10-06 | 1915-04-07 | $7700.00 | Window Closed / Lapsed |