US3522647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a spherical container
Assignee: Lennox Industries Inc
•
Filing: 1968-02-19
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Granted: 1970-08-04
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Expires: 1988-02-19
Abstract
No abstract record available.
Inventors
- 👤 Mervin L Holcomb
- 👤 John B Winegardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:33
CPC Classifications
B; B23; B23K; B23K37/00; B23K37/04; B23K37/0417; B21; B21D; B21D51/00; B21D51/16; B21D51/24; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49893
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) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |