US3283284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical heating film
Assignee: Individual
•
Filing: 1962-01-12
•
Granted: 1966-11-01
•
Expires: 1982-01-12
Abstract
No abstract record available.
Inventors
- 👤 Eisler Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:04
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/56; F; F24; F24D; F24D13/00; F24D13/02; F24D13/022; F24D13/024; H05B3/02; H05B3/06; H05B3/10; H05B3/20; H05B3/22; H05B3/26; H05B3/565; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
AN ELECTRIC HEATING FILM CONSISTING AT LEAST OF AN ELECTRICALLY CONDUCTIVE FOIL HAVING NARROW ELONGATED OPENINGS THEREIN BY WHICH AT LEAST ONE MEANDER PATTERN IS DEFINED COMPRISING SUBSTANTIALLY PARALLEL ARMS AND BRIDGES JOINING THE ENDS OF THE ARMS, THE FOIL PATTERN CHARACTERISED BY AT LEAST ONE OF THE MARGINS OF THE FOIL BOUND-
Claim 2
Dependent Claim
53 words
AN ELECTRIC HEATING FILM CONSISTING AT LEAST OF AN ELECTRICALLY CONDUCTIVE FOIL HAVING NARROW ELONGATED OPENINGS THEREIN BY WHICH AT LEAST ONE MEANDER PATTERN IS DEFINED COMPRISING SUBSTANTIALLY PARALLEL ARMS AND BRIDGES JOINING THE ENDS OF THE ARMS, THE FOIL PATTERN CHARACTERISED BY AT LEAST ONE OF THE MARGINS OF THE FOIL BOUND-
References Cited (Backward Citations)
DE639206C
Cited
US1332030A
Cited
US1396871A
Cited
US1526649A
Cited
US1998575A
Cited
US2087573A
Cited
US2102302A
Cited
US2273941A
Cited
US2464147A
Cited
US2457616A
Cited
US2487695A
Cited
US2680800A
Cited
US2627012A
Cited
US2583682A
Cited
US2828792A
Cited
US2737571A
Cited
US2885524A
Cited
US2872565A
Cited
US2891303A
Cited
US2961522A
Cited
US2912555A
Cited
US3013341A
Cited
US2897600A
Cited
US2986014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |