US2914833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper tube for forming concrete columns and the like having an overlapped inner ply with a coating material thereon
Assignee: Sonoco Products Co
•
Filing: 1956-11-26
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Granted: 1959-12-01
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Expires: 1976-11-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Edgar L Hart
- 👤 Baynard R Whaley
- 👤 Richard W Turnage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:27
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US837328A
Cited
US1287945A
Cited
US1394255A
Cited
US1665355A
Cited
US2333679A
Cited
US2498149A
Cited
US2677165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |