US3220064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting of sash balances
Assignee: Caldwell Manufacturing Co Inc
•
Filing: 1960-11-25
•
Granted: 1965-11-30
•
Expires: 1980-11-25
Abstract
No abstract record available.
Inventors
- 👤 Nobes William Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:39
CPC Classifications
E; E05; E05D; E05D13/00; E05D13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US565525A
Cited
US1337012A
Cited
DE766456C
Cited
US2603167A
Cited
US2871506A
Cited
US2885725A
Cited
US2986771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |