US2814078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1954-09-20
•
Granted: 1957-11-26
•
Expires: 1974-09-20
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Durr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:13
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/04; E06B3/28; E06B3/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US172511A
Cited
US1002166A
Cited
US2573681A
Cited
US2589685A
Cited
US2541948A
Cited
US2572764A
Cited
US2705062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |