Patent US2671539A successfully refreshed from Google Patents.
US2671539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint structure for doors and sashes
Assignee: Individual
•
Filing: 1950-07-20
•
Granted: 1954-03-09
•
Expires: 1970-07-20
Abstract
No abstract record available.
Inventors
- 👤 Kiefer Augustine John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:21
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/96; E06B3/9604; B; B62; B62D; B62D27/00; B62D27/02; B62D27/023; Y; Y10; Y10T; Y10T403/00; Y10T403/47; Y10T403/477
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1502091A
Cited
FR660390A
Cited
FR37069E
Cited
US2482592A
Cited
US2457129A
Cited
US2617502A
Cited
US2589729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |