Patent US2528673A successfully refreshed from Google Patents.
US2528673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereoscopic viewing device
Assignee: Individual
•
Filing: 1946-09-24
•
Granted: 1950-11-07
•
Expires: 1966-09-24
Abstract
No abstract record available.
Inventors
- 👤 Barney L Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:35
CPC Classifications
G; G02; G02B; G02B30/00; G02B30/20; G02B30/34; G02B30/35
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1313262A
Cited
US1169163A
Cited
US907973A
Cited
FR419967A
Cited
FR529233A
Cited
US1494728A
Cited
US1632851A
Cited
US1798396A
Cited
US1850153A
Cited
US1818974A
Cited
US1971066A
Cited
CH174130A
Cited
US2143632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |