Patent US723797A successfully refreshed from Google Patents.
US723797A
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Electric thermal therapeutic blanket.
Assignee: A PHILLIPS LUDLOW
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Filing: 1902-11-03
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Granted: 1903-03-24
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Expires: 1922-11-03
Abstract
No abstract record available.
Inventors
- 👤 William E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:21
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02
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) | 1906-03-23 | 1906-09-22 | 1907-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-03-23 | 1910-09-22 | 1911-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-03-23 | 1914-09-22 | 1915-03-24 | $7700.00 | Window Closed / Lapsed |