US2755374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflecting system
Assignee: Individual
•
Filing: 1952-06-26
•
Granted: 1956-07-17
•
Expires: 1972-06-26
Abstract
No abstract record available.
Inventors
- 👤 Ott Walter
- 👤 Oberholzer Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:29
CPC Classifications
G; G02; G02B; G02B19/00; G02B19/0033; G02B19/0047; G02B17/00; G02B17/02; G02B17/06; G02B17/0605; G02B17/061; G02B19/0004; G02B19/0019; G02B19/0023; F; F21; F21W; F21W2131/00; F21W2131/20; F21W2131/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL47127C
Cited
FR465220A
Cited
US1278026A
Cited
US1469690A
Cited
FR768038A
Cited
US2342721A
Cited
US2342115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |