US3403988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromized metal substrate
Assignee: EIDP Inc
•
Filing: 1964-09-17
•
Granted: 1968-10-01
•
Expires: 1984-09-17
Abstract
No abstract record available.
Inventors
- 👤 Giles F Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:20
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/18; C23C10/20; C23C10/22; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/927; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12958; Y10T428/12965; Y10T428/12972; Y10T428/12979
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1998496A
Cited
US1896411A
Cited
US2791517A
Cited
US2851375A
Cited
US2962391A
Cited
US3061462A
Cited
US3096205A
Cited
US3222212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |