Patent US2049472A successfully refreshed from Google Patents.
Patent US2723845A successfully refreshed from Google Patents.
US2723845A
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Photo-electric apparatus
Assignee: F SCHICHAU AG Firma
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Filing: 1951-08-28
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Granted: 1955-11-15
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Expires: 1971-08-28
Abstract
No abstract record available.
Inventors
- 👤 Przybylski Kurt
- 👤 Noe Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:59
CPC Classifications
B; B23; B23Q; B23Q35/00; B23K; B23K7/00; B23K7/002; B23K7/004; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/127; B23Q35/128; B23Q2735/00; B23Q2735/002; B23Q2735/004; B23Q2735/02; B23Q2735/06; B23Q2735/065; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/300896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1706238A
Cited
US2427158A
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US2261644A
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US2430924A
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US2570405A
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US2461585A
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US2499178A
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US2611887A
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US2559097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |