US3293405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated footwear
Assignee: Individual
•
Filing: 1965-09-13
•
Granted: 1966-12-20
•
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 21:17
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,
References Cited (Backward Citations)
US1312830A
Cited
US1558278A
Cited
US1702583A
Cited
GB546812A
Cited
US2277772A
Cited
US2329766A
Cited
US2692326A
Cited
US3010007A
Cited
US3084241A
Cited
US3079486A
Cited
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 |