Patent US2697253A successfully refreshed from Google Patents.
US2697253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
krupt
Assignee: —
•
Filing: —
•
Granted: 1954-12-21
•
Expires: 1971-12-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:44
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/02; B29C43/18; B05; B05C; B05C5/00; B05C5/02; B29C65/00; B29C65/02; H; H05; H05K; H05K3/00; H05K3/10; H05K3/12; H05K3/1216; H05K3/1233; H05K3/40; H05K3/4038; H05K3/4053; H05K2203/00; H05K2203/01; H05K2203/0104; H05K2203/0126; H05K2203/08; H05K2203/085; Y; Y10; Y10S; Y10S425/00; Y10S425/811
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US791648A
Cited
US806783A
Cited
US912092A
Cited
US1270969A
Cited
GB201092A
Cited
US2088144A
Cited
US2229965A
Cited
US2569226A
Cited
US2489069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |