Patent US2953206A successfully refreshed from Google Patents.
US2953206A
Expired / Lapsed
US
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Bridging plug
Assignee: Individual
•
Filing: 1955-08-08
•
Granted: 1960-09-20
•
Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 Cicero C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:50
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/06; Y; Y10; Y10S; Y10S285/00; Y10S285/922
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2274093A
Cited
US2270648A
Cited
US2409811A
Cited
US2366547A
Cited
US2401119A
Cited
US2736384A
Cited
US2698056A
Cited
US2737245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |