US2480180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying steel reinforcement to existing columns
Assignee: John D Bolton & Co Inc
•
Filing: 1948-06-05
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Granted: 1949-08-30
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Expires: 1968-06-05
Abstract
No abstract record available.
Inventors
- 👤 John D Bolton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:04
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/01; E04C5/02; E04C5/03; B; B65; B65H; B65H81/00; E04G; E04G23/00; E04G23/02; E04G23/0218; E04G23/0225; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49618; Y10T29/49826; Y10T29/49863; Y10T29/49874; Y10T29/49888
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1070707A
Cited
US1107235A
Cited
US1155389A
Cited
US1372816A
Cited
US2191025A
Cited
US2321465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |