US3143641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof heating pad
Assignee: General Electric Co
•
Filing: 1962-09-25
•
Granted: 1964-08-04
•
Expires: 1982-09-25
Abstract
No abstract record available.
Inventors
- 👤 Wise Robert Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:33
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; H05B2203/00; H05B2203/014
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
AN ELECTRIC HEATING PAD HAVING A FLEXIBLE WATERPROOF, AIRTIGHT SURFACE MATERIAL, A REISISTANCE HEATING ELEMENT DISTRIBUTED WITHIN SAID COVER, AN UNSEALED HEATING PAD CONTROL UNIT, A FLEXIBLE WATERPROOF POWER CORD SEALED TO SAID PAD, AT ONE END AND CONNECTED TO SAID CONTROL UNIT AT ITS OTHER END, SAID CORD INCLUDING AN AIR PASSAGE FORMED THEREIN TO PROVIDE AIR PRESSURE RELIEF MEANS FOR THE PAD.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |