US2926727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doors
Assignee: Individual
•
Filing: 1956-06-07
•
Granted: 1960-03-01
•
Expires: 1976-06-07
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Purdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:11
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/681; E05F15/686; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US951867A
Cited
US1008988A
Cited
US1198939A
Cited
US1949805A
Cited
US1908634A
Cited
US2030873A
Cited
US2007020A
Cited
US1936300A
Cited
US1976075A
Cited
US2607410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |