US2689154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trestle
Assignee: Individual
•
Filing: 1952-03-28
•
Granted: 1954-09-14
•
Expires: 1972-03-28
Abstract
No abstract record available.
Inventors
- 👤 Redler Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:05
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US304207A
Cited
USRE23097E
Cited
US657648A
Cited
US872722A
Cited
US1261007A
Cited
US1501088A
Cited
US1636342A
Cited
GB364291A
Cited
US1961760A
Cited
US2158939A
Cited
US2343557A
Cited
US2551062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |