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US2520077A
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Assignee: Individual
•
Filing: 1949-08-23
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Granted: 1950-08-22
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Expires: 1969-08-23
Abstract
No abstract record available.
Inventors
- 👤 William H Wolowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:23
CPC Classifications
B; B42; B42D; B42D25/00; B42D25/30; B42D25/318; G; G06; G06K; G06K19/00; G06K19/06; G06K19/08; G06K19/10; B42D2033/04; B42D2033/10; B42D2033/28; B42D2033/32; B42D2033/40; B42D2035/08; B42D2035/34; B42D25/20; B42D25/324; B42D25/40; B42D25/45; B42D25/455; B42D25/46; B42D25/465; B42D25/47; Y; Y10; Y10S; Y10S283/00; Y10S283/904; Y10S462/00; Y10S462/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US912093A
Cited
US2091976A
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US2195844A
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DE706228C
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US2265222A
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US2305195A
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US2305127A
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US2425305A
Cited
US2361670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |