US2657670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1950-10-19
•
Granted: 1953-11-03
•
Expires: 1970-10-19
Abstract
No abstract record available.
Inventors
- 👤 Lloyd L Colburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:05
CPC Classifications
B; B43; B43K; B43K21/00; B43K21/02; B43K21/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE38488C
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DE364664C
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US1820130A
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CH178251A
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US2264962A
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US2398548A
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US2435185A
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US2476571A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |