US2730797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of simultaneously springing two girders
Assignee: Individual
•
Filing: 1952-07-21
•
Granted: 1956-01-17
•
Expires: 1972-07-21
Abstract
No abstract record available.
Inventors
- 👤 Lipski Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:56
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/10; B21D11/12; E; E04; E04G; E04G21/00; E04G21/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49874
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1967828A
Cited
US1995313A
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US2016093A
Cited
US2240724A
Cited
US2382139A
Cited
CH273004A
Cited
US2415240A
Cited
US2510958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |