Patent US3375831A successfully refreshed from Google Patents.
US3375831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic covering structure
Assignee: Individual
•
Filing: 1966-07-13
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Granted: 1968-04-02
•
Expires: 1986-07-13
Abstract
No abstract record available.
Inventors
- 👤 Serbus George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:29
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/32; E04H15/34; Y; Y10; Y10S; Y10S135/00; Y10S135/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US353168A
Cited
US1052960A
Cited
US1065237A
Cited
US1258773A
Cited
US2256050A
Cited
US3328926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |