Patent US2054444A successfully refreshed from Google Patents.
Patent US2464271A successfully refreshed from Google Patents.
Patent US746248A successfully refreshed from Google Patents.
Patent US4593379A successfully refreshed from Google Patents.
Patent US2887153A successfully refreshed from Google Patents.
US2887153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightweight adjustable louvres
Assignee: Individual
•
Filing: 1956-04-02
•
Granted: 1959-05-19
•
Expires: 1976-04-02
Abstract
No abstract record available.
Inventors
- 👤 Longley Herbert Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:43
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/02; E06B7/08; E06B7/084
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1789655A
Cited
US1851782A
Cited
GB478907A
Cited
US2119856A
Cited
US2165669A
Cited
US2524372A
Cited
US2717034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |