US3453087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular reformer furnace
Assignee: Girdler Corp
•
Filing: 1964-06-25
•
Granted: 1969-07-01
•
Expires: 1984-06-25
Abstract
No abstract record available.
Inventors
- 👤 Henry Carl Herp Jr
- 👤 Avery Crowell Kelsall
- 👤 Gordon Stanley Bowker
- 👤 Hilton Alvin Bennett Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:31
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20; B; B01; B01J; B01J19/00; B01J19/24; B01J19/2415; B01J19/2425; B01J8/00; B01J8/02; B01J8/06; B01J8/062; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/384; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00477; B01J2208/00495; B01J2208/00504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2279192A
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US2660519A
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US2944876A
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US2988063A
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US3172739A
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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) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |