Patent US1722671A successfully refreshed from Google Patents.
US1722671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making columns
Assignee: John E Lingo & Son Inc
•
Filing: 1927-06-09
•
Granted: 1929-07-30
•
Expires: 1947-06-09
Abstract
No abstract record available.
Inventors
- 👤 Archibald E Lingo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:29
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/02; E04H12/08; B; B21; B21C; B21C37/00; B21C37/06; B21C37/08; B21C37/0815; B21C37/15; B21C37/16; B21C37/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49631
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1932-07-29 | 1933-01-28 | 1933-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-07-29 | 1937-01-28 | 1937-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-07-29 | 1941-01-28 | 1941-07-30 | $7700.00 | Window Closed / Lapsed |