US2637570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Order board
Assignee: Individual
•
Filing: 1949-03-26
•
Granted: 1953-05-05
•
Expires: 1969-03-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:33
CPC Classifications
B; B41; B41L; B41L3/00; B41L3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE400686C
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US2183095A
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US784311A
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US971725A
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US1440477A
Cited
US1760776A
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US2033147A
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US2117372A
Cited
US2163193A
Cited
US2493052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |