US3457537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible resistance element film
Assignee: Individual
•
Filing: 1966-11-23
•
Granted: 1969-07-22
•
Expires: 1986-11-23
Abstract
No abstract record available.
Inventors
- 👤 Paul J Hines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:21
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/305; H01C10/306; H01C17/00; H01C17/06; H01C17/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2761849A
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US2679569A
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US2714148A
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US2761854A
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US2705749A
Cited
US2866057A
Cited
US2864774A
Cited
US3003975A
Cited
US3083169A
Cited
US3056750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |