Patent US2939170A successfully refreshed from Google Patents.
US2939170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable mounting for sliding sash
Assignee: Individual
•
Filing: 1957-05-06
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Granted: 1960-06-07
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Expires: 1977-05-06
Abstract
No abstract record available.
Inventors
- 👤 Herbert K Lundgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:41
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/44; E05; E05D; E05D13/00; E05D13/10; E05D13/12; E06B2003/4438; E06B2003/4446
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US491114A
Cited
US1909698A
Cited
US2188054A
Cited
US2122576A
Cited
US2306193A
Cited
US2786230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |