Patent US3301336A successfully refreshed from Google Patents.
Patent US2942704A successfully refreshed from Google Patents.
US2942704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for assembling luminous ceilings
Assignee: PITTSBURGH REFLECTOR Co
•
Filing: 1955-05-18
•
Granted: 1960-06-28
•
Expires: 1975-05-18
Abstract
No abstract record available.
Inventors
- 👤 Walter W Stubbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:33
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US410856A
Cited
US1817619A
Cited
US1826133A
Cited
US1950250A
Cited
US2065068A
Cited
US2066205A
Cited
US2150344A
Cited
US2691720A
Cited
US2689630A
Cited
US2610365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |