US2537109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal screen frame
Assignee: CHAMBERLIN Co OF AMERICA
•
Filing: 1946-03-23
•
Granted: 1951-01-09
•
Expires: 1966-03-23
Abstract
No abstract record available.
Inventors
- 👤 Leon E Willett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:06
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1059677A
Cited
US1245044A
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US1201338A
Cited
US1665475A
Cited
US1797511A
Cited
US2024928A
Cited
US2101349A
Cited
US2197489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |