US3524282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sash guiding and balancing apparatus for removable sashes
Assignee: Caldwell Manufacturing Co Inc
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Filing: 1967-10-30
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Granted: 1970-08-18
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Expires: 1987-10-30
Abstract
No abstract record available.
Inventors
- 👤 Donald E Kraft
- 👤 Zygmunt J Czubachowski
- 👤 Wm Douglas Nobes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:20
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/50; E06B3/5054; E06B3/5063; E06B3/34; E06B3/42; E06B3/44; E06B2003/4438; E06B2003/4446
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |