US2494495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary film holder
Assignee: American Safety Razor Corp
•
Filing: 1945-06-20
•
Granted: 1950-01-10
•
Expires: 1965-06-20
Abstract
No abstract record available.
Inventors
- 👤 Wilfred E Tait
- 👤 August W Stellpflug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:04
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/58; G03B27/585
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US46503A
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US517539A
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US1127539A
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US1282373A
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DE388577C
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Cited
US1570453A
Cited
US1722573A
Cited
US1794279A
Cited
US1900730A
Cited
US2133581A
Cited
US2223148A
Cited
US2188974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |