US3420723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming and applying tubular back linings to fillers
Assignee: Smyth Manufacturing Co
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Filing: 1964-11-30
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Granted: 1969-01-07
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Expires: 1984-11-30
Abstract
No abstract record available.
Inventors
- 👤 James H Thorp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:03
CPC Classifications
B; B42; B42C; B42C9/00; B42C9/02; Y; Y10; Y10S; Y10S156/00; Y10S156/908; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/101; Y10T156/1089; Y10T156/1092; Y10T156/1097; Y10T156/1098
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |