Patent US3304544A successfully refreshed from Google Patents.
Patent US2994847A successfully refreshed from Google Patents.
US2994847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film resistors and methods of manufacture
Assignee: Centre National de la Recherche Scientifique
•
Filing: 1955-05-31
•
Granted: 1961-08-01
•
Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 Vodar Boris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:18
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/075; H01C17/08; H01B; H01B1/00; H01C1/00; H01C1/02; H01C1/024; H01C1/026; H01C1/06; H01C7/00; H01C7/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49117; Y10T29/49124; Y10T29/49155
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US865367A
Cited
US892332A
Cited
AU101011B
Cited
US1869544A
Cited
US1978165A
Cited
US1952717A
Cited
US2119680A
Cited
US2132175A
Cited
US2337202A
Cited
FR938594A
Cited
US2408822A
Cited
US2449786A
Cited
GB570026A
Cited
US2448518A
Cited
US2486148A
Cited
US2586752A
Cited
US2552626A
Cited
US2703373A
Cited
GB672519A
Cited
FR1061274A
Cited
US2837619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |