Patent US3996476A successfully refreshed from Google Patents.
Patent US3293405A successfully refreshed from Google Patents.
US3293405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated footwear
Assignee: Individual
•
Filing: 1965-09-13
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Granted: 1966-12-20
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Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Raphael J Costanzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:30
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; A; A41; A41B; A41B11/00; A41D; A41D13/00; A41D13/002; A41D13/005; A41D13/0051; H05B2203/00; H05B2203/014; H05B2203/017; H05B2203/032; H05B2203/036
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
IN COMBINATION (A) A WOVEN SOCK HAVING A TOE PORTION, A HEEL PORTION AND A CONNECTED LEG PORTION, (B) MEANS DEFINING A POCKET ADJACENT THE UPPER END OF SAID LEG PORTION ADAPTED TO RECEIVE A LOW VOLTAGE BATTERY OF LESS THAN 6 VOLTS, (C) ELECTRICAL NON-CONDUCTIVE MEANS DEFINING A POCKET IN THE TOE PORTION OF SAID SOCK, (D) A HEATER DISPOSED IN SAID TOE POCKET, (E) SAID HEATER INCLUDING A FLAT RESISTOR STRIP OF ELECTRICCAL RESISTANCE MATERIAL, (F) RADIATION MEANS CONNECTED IN HEAT TRANSFER RELATIONSHIP TO SAID FLAT RESISTOR STRIP FOR DEFINING AN EXPANDED RADIATION SURFACE FOR SAID HEATER,
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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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |