US2997311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: R A MACPLUM IND Inc
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Filing: 1960-05-26
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Granted: 1961-08-22
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Expires: 1980-05-26
Abstract
No abstract record available.
Inventors
- 👤 Umanoff Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:12
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/14; B62B3/144; B62B2501/00; B62B2501/06; B62B2501/065; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |