US3139469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete pipe
Assignee: Individual
•
Filing: 1960-09-19
•
Granted: 1964-06-30
•
Expires: 1980-09-19
Abstract
No abstract record available.
Inventors
- 👤 Marion R Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:09
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/08; B; B28; B28B; B28B21/00; B28B21/56; B28B21/563; F16L25/00; F16L25/0027; Y; Y10; Y10S; Y10S425/00; Y10S425/218
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2901904A
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US2937065A
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US2958906A
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US2865267A
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US2983081A
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US2955322A
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US3039232A
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US2992457A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |