US2863205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming concrete pipes
Assignee: Lock Joint Pipe Co
•
Filing: 1953-08-06
•
Granted: 1958-12-09
•
Expires: 1973-08-06
Abstract
No abstract record available.
Inventors
- 👤 Seaman Francis Eugene
- 👤 Rudolf C Gottschalk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:58
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/76; B28B21/80; Y; Y10; Y10S; Y10S425/00; Y10S425/218
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB269262A
Cited
US1750138A
Cited
US1899115A
Cited
US1984863A
Cited
US1954904A
Cited
US2189071A
Cited
GB489298A
Cited
US2281731A
Cited
US2404464A
Cited
US2399321A
Cited
US2484018A
Cited
US2602469A
Cited
US2575353A
Cited
US2703916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |