US2947219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide-angle objective lens
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
•
Filing: 1958-07-24
•
Granted: 1960-08-02
•
Expires: 1978-07-24
Abstract
No abstract record available.
Inventors
- 👤 Abraham C S Van Heel
- 👤 Gerardus J Beernink
- 👤 Hendrik J Raterink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:44
CPC Classifications
G; G02; G02B; G02B13/00; G02B13/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE384879C
Cited
GB225398A
Cited
DE677592C
Cited
DE620538C
Cited
DE672393C
Cited
US2146662A
Cited
US2187780A
Cited
US2324081A
Cited
US2373815A
Cited
GB755955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |