US2725210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swartz
Assignee: —
•
Filing: —
•
Granted: 1955-11-29
•
Expires: 1972-11-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:12
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/14; E04G25/00; E04G25/04; E04G25/06; E04G13/00; E04G21/00; E04G21/24; E04G21/26; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US737133A
Cited
US1559575A
Cited
US1710886A
Cited
US1653742A
Cited
US2291170A
Cited
US2532168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |