US2614310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Undercut former
Assignee: Individual
•
Filing: 1948-08-21
•
Granted: 1952-10-21
•
Expires: 1968-08-21
Abstract
No abstract record available.
Inventors
- 👤 James Robert Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:34
CPC Classifications
E; E04; E04G; E04G15/00; E04G15/06; E04G15/063; Y; Y10; Y10S; Y10S425/00; Y10S425/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1641147A
Cited
US1821951A
Cited
US1848014A
Cited
US1917062A
Cited
US2037545A
Cited
US2000409A
Cited
US2311479A
Cited
US2318692A
Cited
US2394227A
Cited
US2593456A
Cited
US2596028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |